Home / 156,920.80-235,176.40-72,671.20

Finding the Fourth Proportional to 156,920.80, 235,176.40 and 72,671.20

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Solution

The fourth proportional to 156,920.80, 235,176.40 and 72,671.20 is: 108,911.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,920.80 : 235,176.40 = 72,671.20 : x
  2. Step 2: Convert to fraction form
    156,920.80/235,176.40 = 72,671.20/x
  3. Step 3: Cross multiply
    156,920.80x = 235,176.40 × 72,671.20
  4. Step 4: Simplify right side
    156,920.80x = 17,090,551,199.68
  5. Step 5: Solve for x
    x = 17,090,551,199.68/156,920.80
  6. Step 6: Final answer
    x = 108,911.96

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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.