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Finding the Fourth Proportional to 108,523.10, 162,784.65 and 77,030.30

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Solution

The fourth proportional to 108,523.10, 162,784.65 and 77,030.30 is: 115,545.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,523.10 : 162,784.65 = 77,030.30 : x
  2. Step 2: Convert to fraction form
    108,523.10/162,784.65 = 77,030.30/x
  3. Step 3: Cross multiply
    108,523.10x = 162,784.65 × 77,030.30
  4. Step 4: Simplify right side
    108,523.10x = 12,539,350,424.90
  5. Step 5: Solve for x
    x = 12,539,350,424.90/108,523.10
  6. Step 6: Final answer
    x = 115,545.45

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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.