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Finding the Fourth Proportional to 124,507.92, 171,814.08 and 70,785.36

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Solution

The fourth proportional to 124,507.92, 171,814.08 and 70,785.36 is: 97,679.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,507.92 : 171,814.08 = 70,785.36 : x
  2. Step 2: Convert to fraction form
    124,507.92/171,814.08 = 70,785.36/x
  3. Step 3: Cross multiply
    124,507.92x = 171,814.08 × 70,785.36
  4. Step 4: Simplify right side
    124,507.92x = 12,161,921,505.87
  5. Step 5: Solve for x
    x = 12,161,921,505.87/124,507.92
  6. Step 6: Final answer
    x = 97,679.90

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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.