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Finding the Fourth Proportional to 99,497.48, 148,518.26 and 87,688.04

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Solution

The fourth proportional to 99,497.48, 148,518.26 and 87,688.04 is: 130,890.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,497.48 : 148,518.26 = 87,688.04 : x
  2. Step 2: Convert to fraction form
    99,497.48/148,518.26 = 87,688.04/x
  3. Step 3: Cross multiply
    99,497.48x = 148,518.26 × 87,688.04
  4. Step 4: Simplify right side
    99,497.48x = 13,023,275,123.61
  5. Step 5: Solve for x
    x = 13,023,275,123.61/99,497.48
  6. Step 6: Final answer
    x = 130,890.50

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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.