Home / 156,988.20-235,480.41-38,660.70

Finding the Fourth Proportional to 156,988.20, 235,480.41 and 38,660.70

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Solution

The fourth proportional to 156,988.20, 235,480.41 and 38,660.70 is: 57,990.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,988.20 : 235,480.41 = 38,660.70 : x
  2. Step 2: Convert to fraction form
    156,988.20/235,480.41 = 38,660.70/x
  3. Step 3: Cross multiply
    156,988.20x = 235,480.41 × 38,660.70
  4. Step 4: Simplify right side
    156,988.20x = 9,103,837,486.89
  5. Step 5: Solve for x
    x = 9,103,837,486.89/156,988.20
  6. Step 6: Final answer
    x = 57,990.58

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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.