Home / 156,713.20-235,199.40-72,602.80

Finding the Fourth Proportional to 156,713.20, 235,199.40 and 72,602.80

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Solution

The fourth proportional to 156,713.20, 235,199.40 and 72,602.80 is: 108,964.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,713.20 : 235,199.40 = 72,602.80 : x
  2. Step 2: Convert to fraction form
    156,713.20/235,199.40 = 72,602.80/x
  3. Step 3: Cross multiply
    156,713.20x = 235,199.40 × 72,602.80
  4. Step 4: Simplify right side
    156,713.20x = 17,076,134,998.32
  5. Step 5: Solve for x
    x = 17,076,134,998.32/156,713.20
  6. Step 6: Final answer
    x = 108,964.24

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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.