Home / 156,930.80-235,191.40-72,681.20

Finding the Fourth Proportional to 156,930.80, 235,191.40 and 72,681.20

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Solution

The fourth proportional to 156,930.80, 235,191.40 and 72,681.20 is: 108,926.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,930.80 : 235,191.40 = 72,681.20 : x
  2. Step 2: Convert to fraction form
    156,930.80/235,191.40 = 72,681.20/x
  3. Step 3: Cross multiply
    156,930.80x = 235,191.40 × 72,681.20
  4. Step 4: Simplify right side
    156,930.80x = 17,093,993,181.68
  5. Step 5: Solve for x
    x = 17,093,993,181.68/156,930.80
  6. Step 6: Final answer
    x = 108,926.95

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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.