Home / 158,310.24-218,465.12-86,686.80

Finding the Fourth Proportional to 158,310.24, 218,465.12 and 86,686.80

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Solution

The fourth proportional to 158,310.24, 218,465.12 and 86,686.80 is: 119,626.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,310.24 : 218,465.12 = 86,686.80 : x
  2. Step 2: Convert to fraction form
    158,310.24/218,465.12 = 86,686.80/x
  3. Step 3: Cross multiply
    158,310.24x = 218,465.12 × 86,686.80
  4. Step 4: Simplify right side
    158,310.24x = 18,938,042,164.42
  5. Step 5: Solve for x
    x = 18,938,042,164.42/158,310.24
  6. Step 6: Final answer
    x = 119,626.14

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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.