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Finding the Fourth Proportional to 101,856.80, 152,353.20 and 91,402.40

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Solution

The fourth proportional to 101,856.80, 152,353.20 and 91,402.40 is: 136,715.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,856.80 : 152,353.20 = 91,402.40 : x
  2. Step 2: Convert to fraction form
    101,856.80/152,353.20 = 91,402.40/x
  3. Step 3: Cross multiply
    101,856.80x = 152,353.20 × 91,402.40
  4. Step 4: Simplify right side
    101,856.80x = 13,925,448,127.68
  5. Step 5: Solve for x
    x = 13,925,448,127.68/101,856.80
  6. Step 6: Final answer
    x = 136,715.94

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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.