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Finding the Fourth Proportional to 99,320.48, 148,980.72 and 29,200.40

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Solution

The fourth proportional to 99,320.48, 148,980.72 and 29,200.40 is: 43,800.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,320.48 : 148,980.72 = 29,200.40 : x
  2. Step 2: Convert to fraction form
    99,320.48/148,980.72 = 29,200.40/x
  3. Step 3: Cross multiply
    99,320.48x = 148,980.72 × 29,200.40
  4. Step 4: Simplify right side
    99,320.48x = 4,350,296,616.29
  5. Step 5: Solve for x
    x = 4,350,296,616.29/99,320.48
  6. Step 6: Final answer
    x = 43,800.60

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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.