Home / 98,411.40-147,505.23-86,542.02

Finding the Fourth Proportional to 98,411.40, 147,505.23 and 86,542.02

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Solution

The fourth proportional to 98,411.40, 147,505.23 and 86,542.02 is: 129,714.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,411.40 : 147,505.23 = 86,542.02 : x
  2. Step 2: Convert to fraction form
    98,411.40/147,505.23 = 86,542.02/x
  3. Step 3: Cross multiply
    98,411.40x = 147,505.23 × 86,542.02
  4. Step 4: Simplify right side
    98,411.40x = 12,765,400,564.76
  5. Step 5: Solve for x
    x = 12,765,400,564.76/98,411.40
  6. Step 6: Final answer
    x = 129,714.65

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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.