Home / 145,166.48-200,322.97-80,639.90

Finding the Fourth Proportional to 145,166.48, 200,322.97 and 80,639.90

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Solution

The fourth proportional to 145,166.48, 200,322.97 and 80,639.90 is: 111,279.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,166.48 : 200,322.97 = 80,639.90 : x
  2. Step 2: Convert to fraction form
    145,166.48/200,322.97 = 80,639.90/x
  3. Step 3: Cross multiply
    145,166.48x = 200,322.97 × 80,639.90
  4. Step 4: Simplify right side
    145,166.48x = 16,154,023,065.29
  5. Step 5: Solve for x
    x = 16,154,023,065.29/145,166.48
  6. Step 6: Final answer
    x = 111,279.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.