Home / 156,973.20-235,589.40-72,862.80

Finding the Fourth Proportional to 156,973.20, 235,589.40 and 72,862.80

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Solution

The fourth proportional to 156,973.20, 235,589.40 and 72,862.80 is: 109,354.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,973.20 : 235,589.40 = 72,862.80 : x
  2. Step 2: Convert to fraction form
    156,973.20/235,589.40 = 72,862.80/x
  3. Step 3: Cross multiply
    156,973.20x = 235,589.40 × 72,862.80
  4. Step 4: Simplify right side
    156,973.20x = 17,165,703,334.32
  5. Step 5: Solve for x
    x = 17,165,703,334.32/156,973.20
  6. Step 6: Final answer
    x = 109,354.36

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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.