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Finding the Fourth Proportional to 157,438.60, 236,157.90 and 148,909.30

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Solution

The fourth proportional to 157,438.60, 236,157.90 and 148,909.30 is: 223,363.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,438.60 : 236,157.90 = 148,909.30 : x
  2. Step 2: Convert to fraction form
    157,438.60/236,157.90 = 148,909.30/x
  3. Step 3: Cross multiply
    157,438.60x = 236,157.90 × 148,909.30
  4. Step 4: Simplify right side
    157,438.60x = 35,166,107,578.47
  5. Step 5: Solve for x
    x = 35,166,107,578.47/157,438.60
  6. Step 6: Final answer
    x = 223,363.95

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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.