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Finding the Fourth Proportional to 162,557.89, 243,905.78 and 87,590.87

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Solution

The fourth proportional to 162,557.89, 243,905.78 and 87,590.87 is: 131,423.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,557.89 : 243,905.78 = 87,590.87 : x
  2. Step 2: Convert to fraction form
    162,557.89/243,905.78 = 87,590.87/x
  3. Step 3: Cross multiply
    162,557.89x = 243,905.78 × 87,590.87
  4. Step 4: Simplify right side
    162,557.89x = 21,363,919,382.32
  5. Step 5: Solve for x
    x = 21,363,919,382.32/162,557.89
  6. Step 6: Final answer
    x = 131,423.46

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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.