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Finding the Fourth Proportional to 122,371.48, 168,866.94 and 72,060.76

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Solution

The fourth proportional to 122,371.48, 168,866.94 and 72,060.76 is: 99,440.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,371.48 : 168,866.94 = 72,060.76 : x
  2. Step 2: Convert to fraction form
    122,371.48/168,866.94 = 72,060.76/x
  3. Step 3: Cross multiply
    122,371.48x = 168,866.94 × 72,060.76
  4. Step 4: Simplify right side
    122,371.48x = 12,168,680,035.27
  5. Step 5: Solve for x
    x = 12,168,680,035.27/122,371.48
  6. Step 6: Final answer
    x = 99,440.49

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1.5x scale

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.