Home / 156,979.70-235,599.15-72,869.30

Finding the Fourth Proportional to 156,979.70, 235,599.15 and 72,869.30

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Solution

The fourth proportional to 156,979.70, 235,599.15 and 72,869.30 is: 109,364.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,979.70 : 235,599.15 = 72,869.30 : x
  2. Step 2: Convert to fraction form
    156,979.70/235,599.15 = 72,869.30/x
  3. Step 3: Cross multiply
    156,979.70x = 235,599.15 × 72,869.30
  4. Step 4: Simplify right side
    156,979.70x = 17,167,945,141.10
  5. Step 5: Solve for x
    x = 17,167,945,141.10/156,979.70
  6. Step 6: Final answer
    x = 109,364.11

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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.