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Finding the Fourth Proportional to 123,145.47, 169,937.35 and 69,430.01

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Solution

The fourth proportional to 123,145.47, 169,937.35 and 69,430.01 is: 95,811.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,145.47 : 169,937.35 = 69,430.01 : x
  2. Step 2: Convert to fraction form
    123,145.47/169,937.35 = 69,430.01/x
  3. Step 3: Cross multiply
    123,145.47x = 169,937.35 × 69,430.01
  4. Step 4: Simplify right side
    123,145.47x = 11,798,752,161.14
  5. Step 5: Solve for x
    x = 11,798,752,161.14/123,145.47
  6. Step 6: Final answer
    x = 95,811.50

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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.