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Finding the Fourth Proportional to 162,448.58, 243,728.21 and 87,575.93

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Solution

The fourth proportional to 162,448.58, 243,728.21 and 87,575.93 is: 131,393.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,448.58 : 243,728.21 = 87,575.93 : x
  2. Step 2: Convert to fraction form
    162,448.58/243,728.21 = 87,575.93/x
  3. Step 3: Cross multiply
    162,448.58x = 243,728.21 × 87,575.93
  4. Step 4: Simplify right side
    162,448.58x = 21,344,723,001.46
  5. Step 5: Solve for x
    x = 21,344,723,001.46/162,448.58
  6. Step 6: Final answer
    x = 131,393.72

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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.