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Finding the Fourth Proportional to 99,377.28, 148,869.09 and 64,341.54

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Solution

The fourth proportional to 99,377.28, 148,869.09 and 64,341.54 is: 96,384.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,377.28 : 148,869.09 = 64,341.54 : x
  2. Step 2: Convert to fraction form
    99,377.28/148,869.09 = 64,341.54/x
  3. Step 3: Cross multiply
    99,377.28x = 148,869.09 × 64,341.54
  4. Step 4: Simplify right side
    99,377.28x = 9,578,466,509.00
  5. Step 5: Solve for x
    x = 9,578,466,509.00/99,377.28
  6. Step 6: Final answer
    x = 96,384.87

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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.