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Finding the Fourth Proportional to 156,765.56, 235,152.80 and 38,436.80

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Solution

The fourth proportional to 156,765.56, 235,152.80 and 38,436.80 is: 57,656.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,765.56 : 235,152.80 = 38,436.80 : x
  2. Step 2: Convert to fraction form
    156,765.56/235,152.80 = 38,436.80/x
  3. Step 3: Cross multiply
    156,765.56x = 235,152.80 × 38,436.80
  4. Step 4: Simplify right side
    156,765.56x = 9,038,521,143.04
  5. Step 5: Solve for x
    x = 9,038,521,143.04/156,765.56
  6. Step 6: Final answer
    x = 57,656.29

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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.