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Finding the Fourth Proportional to 100,397.60, 149,776.20 and 93,238.82

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Solution

The fourth proportional to 100,397.60, 149,776.20 and 93,238.82 is: 139,096.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,397.60 : 149,776.20 = 93,238.82 : x
  2. Step 2: Convert to fraction form
    100,397.60/149,776.20 = 93,238.82/x
  3. Step 3: Cross multiply
    100,397.60x = 149,776.20 × 93,238.82
  4. Step 4: Simplify right side
    100,397.60x = 13,964,956,152.08
  5. Step 5: Solve for x
    x = 13,964,956,152.08/100,397.60
  6. Step 6: Final answer
    x = 139,096.51

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.