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Finding the Fourth Proportional to 98,402.40, 147,491.73 and 86,533.02

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Solution

The fourth proportional to 98,402.40, 147,491.73 and 86,533.02 is: 129,701.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,402.40 : 147,491.73 = 86,533.02 : x
  2. Step 2: Convert to fraction form
    98,402.40/147,491.73 = 86,533.02/x
  3. Step 3: Cross multiply
    98,402.40x = 147,491.73 × 86,533.02
  4. Step 4: Simplify right side
    98,402.40x = 12,762,904,821.92
  5. Step 5: Solve for x
    x = 12,762,904,821.92/98,402.40
  6. Step 6: Final answer
    x = 129,701.15

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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.