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Finding the Fourth Proportional to 108,874.46, 163,158.53 and 86,588.93

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Solution

The fourth proportional to 108,874.46, 163,158.53 and 86,588.93 is: 129,761.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,874.46 : 163,158.53 = 86,588.93 : x
  2. Step 2: Convert to fraction form
    108,874.46/163,158.53 = 86,588.93/x
  3. Step 3: Cross multiply
    108,874.46x = 163,158.53 × 86,588.93
  4. Step 4: Simplify right side
    108,874.46x = 14,127,721,284.34
  5. Step 5: Solve for x
    x = 14,127,721,284.34/108,874.46
  6. Step 6: Final answer
    x = 129,761.58

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1.5x scale

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.