Home / 102,563.15-141,555.20-66,309.17

Finding the Fourth Proportional to 102,563.15, 141,555.20 and 66,309.17

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Solution

The fourth proportional to 102,563.15, 141,555.20 and 66,309.17 is: 91,518.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,563.15 : 141,555.20 = 66,309.17 : x
  2. Step 2: Convert to fraction form
    102,563.15/141,555.20 = 66,309.17/x
  3. Step 3: Cross multiply
    102,563.15x = 141,555.20 × 66,309.17
  4. Step 4: Simplify right side
    102,563.15x = 9,386,406,781.86
  5. Step 5: Solve for x
    x = 9,386,406,781.86/102,563.15
  6. Step 6: Final answer
    x = 91,518.32

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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.