Home / 156,929.32-235,211.46-72,512.20

Finding the Fourth Proportional to 156,929.32, 235,211.46 and 72,512.20

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Solution

The fourth proportional to 156,929.32, 235,211.46 and 72,512.20 is: 108,683.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,929.32 : 235,211.46 = 72,512.20 : x
  2. Step 2: Convert to fraction form
    156,929.32/235,211.46 = 72,512.20/x
  3. Step 3: Cross multiply
    156,929.32x = 235,211.46 × 72,512.20
  4. Step 4: Simplify right side
    156,929.32x = 17,055,700,429.81
  5. Step 5: Solve for x
    x = 17,055,700,429.81/156,929.32
  6. Step 6: Final answer
    x = 108,683.96

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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.