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Finding the Fourth Proportional to 123,145.84, 169,937.86 and 69,430.39

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Solution

The fourth proportional to 123,145.84, 169,937.86 and 69,430.39 is: 95,812.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,145.84 : 169,937.86 = 69,430.39 : x
  2. Step 2: Convert to fraction form
    123,145.84/169,937.86 = 69,430.39/x
  3. Step 3: Cross multiply
    123,145.84x = 169,937.86 × 69,430.39
  4. Step 4: Simplify right side
    123,145.84x = 11,798,851,895.57
  5. Step 5: Solve for x
    x = 11,798,851,895.57/123,145.84
  6. Step 6: Final answer
    x = 95,812.02

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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.