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Finding the Fourth Proportional to 162,013.20, 243,019.80 and 90,862.80

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Solution

The fourth proportional to 162,013.20, 243,019.80 and 90,862.80 is: 136,294.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,013.20 : 243,019.80 = 90,862.80 : x
  2. Step 2: Convert to fraction form
    162,013.20/243,019.80 = 90,862.80/x
  3. Step 3: Cross multiply
    162,013.20x = 243,019.80 × 90,862.80
  4. Step 4: Simplify right side
    162,013.20x = 22,081,459,483.44
  5. Step 5: Solve for x
    x = 22,081,459,483.44/162,013.20
  6. Step 6: Final answer
    x = 136,294.20

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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.