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Finding the Fourth Proportional to 102,371.92, 153,485.16 and 39,138.76

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Solution

The fourth proportional to 102,371.92, 153,485.16 and 39,138.76 is: 58,680.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,371.92 : 153,485.16 = 39,138.76 : x
  2. Step 2: Convert to fraction form
    102,371.92/153,485.16 = 39,138.76/x
  3. Step 3: Cross multiply
    102,371.92x = 153,485.16 × 39,138.76
  4. Step 4: Simplify right side
    102,371.92x = 6,007,218,840.80
  5. Step 5: Solve for x
    x = 6,007,218,840.80/102,371.92
  6. Step 6: Final answer
    x = 58,680.34

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1.5x scale

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.