Home / 156,987.13-235,478.67-38,659.50

Finding the Fourth Proportional to 156,987.13, 235,478.67 and 38,659.50

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Solution

The fourth proportional to 156,987.13, 235,478.67 and 38,659.50 is: 57,988.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,987.13 : 235,478.67 = 38,659.50 : x
  2. Step 2: Convert to fraction form
    156,987.13/235,478.67 = 38,659.50/x
  3. Step 3: Cross multiply
    156,987.13x = 235,478.67 × 38,659.50
  4. Step 4: Simplify right side
    156,987.13x = 9,103,487,642.87
  5. Step 5: Solve for x
    x = 9,103,487,642.87/156,987.13
  6. Step 6: Final answer
    x = 57,988.75

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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.