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Finding the Fourth Proportional to 105,129.12, 157,737.28 and 63,090.08

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Solution

The fourth proportional to 105,129.12, 157,737.28 and 63,090.08 is: 94,661.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,129.12 : 157,737.28 = 63,090.08 : x
  2. Step 2: Convert to fraction form
    105,129.12/157,737.28 = 63,090.08/x
  3. Step 3: Cross multiply
    105,129.12x = 157,737.28 × 63,090.08
  4. Step 4: Simplify right side
    105,129.12x = 9,951,657,614.18
  5. Step 5: Solve for x
    x = 9,951,657,614.18/105,129.12
  6. Step 6: Final answer
    x = 94,661.29

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.