Home / 168,012,957.40-252,019,436.10-139,315,143.40

Finding the Fourth Proportional to 168,012,957.40, 252,019,436.10 and 139,315,143.40

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Solution

The fourth proportional to 168,012,957.40, 252,019,436.10 and 139,315,143.40 is: 208,972,715.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,012,957.40 : 252,019,436.10 = 139,315,143.40 : x
  2. Step 2: Convert to fraction form
    168,012,957.40/252,019,436.10 = 139,315,143.40/x
  3. Step 3: Cross multiply
    168,012,957.40x = 252,019,436.10 × 139,315,143.40
  4. Step 4: Simplify right side
    168,012,957.40x = 35,110,123,879,858,636
  5. Step 5: Solve for x
    x = 35,110,123,879,858,636/168,012,957.40
  6. Step 6: Final answer
    x = 208,972,715.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.