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Finding the Fourth Proportional to 101,312.16, 151,875.32 and 38,935.68

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Solution

The fourth proportional to 101,312.16, 151,875.32 and 38,935.68 is: 58,367.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,312.16 : 151,875.32 = 38,935.68 : x
  2. Step 2: Convert to fraction form
    101,312.16/151,875.32 = 38,935.68/x
  3. Step 3: Cross multiply
    101,312.16x = 151,875.32 × 38,935.68
  4. Step 4: Simplify right side
    101,312.16x = 5,913,368,859.42
  5. Step 5: Solve for x
    x = 5,913,368,859.42/101,312.16
  6. Step 6: Final answer
    x = 58,367.81

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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.