Home / 108,316.91-162,340.07-74,769.68

Finding the Fourth Proportional to 108,316.91, 162,340.07 and 74,769.68

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Solution

The fourth proportional to 108,316.91, 162,340.07 and 74,769.68 is: 112,061.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,316.91 : 162,340.07 = 74,769.68 : x
  2. Step 2: Convert to fraction form
    108,316.91/162,340.07 = 74,769.68/x
  3. Step 3: Cross multiply
    108,316.91x = 162,340.07 × 74,769.68
  4. Step 4: Simplify right side
    108,316.91x = 12,138,115,117.08
  5. Step 5: Solve for x
    x = 12,138,115,117.08/108,316.91
  6. Step 6: Final answer
    x = 112,061.13

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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.