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Finding the Fourth Proportional to 123,859.01, 170,929.47 and 70,142.87

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Solution

The fourth proportional to 123,859.01, 170,929.47 and 70,142.87 is: 96,799.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,859.01 : 170,929.47 = 70,142.87 : x
  2. Step 2: Convert to fraction form
    123,859.01/170,929.47 = 70,142.87/x
  3. Step 3: Cross multiply
    123,859.01x = 170,929.47 × 70,142.87
  4. Step 4: Simplify right side
    123,859.01x = 11,989,483,593.38
  5. Step 5: Solve for x
    x = 11,989,483,593.38/123,859.01
  6. Step 6: Final answer
    x = 96,799.45

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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.