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Finding the Fourth Proportional to 162,281.80, 243,422.70 and 99,987.40

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Solution

The fourth proportional to 162,281.80, 243,422.70 and 99,987.40 is: 149,981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,281.80 : 243,422.70 = 99,987.40 : x
  2. Step 2: Convert to fraction form
    162,281.80/243,422.70 = 99,987.40/x
  3. Step 3: Cross multiply
    162,281.80x = 243,422.70 × 99,987.40
  4. Step 4: Simplify right side
    162,281.80x = 24,339,202,873.98
  5. Step 5: Solve for x
    x = 24,339,202,873.98/162,281.80
  6. Step 6: Final answer
    x = 149,981.10

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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.