Home / 156,974.06-235,461.33-72,688.30

Finding the Fourth Proportional to 156,974.06, 235,461.33 and 72,688.30

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Solution

The fourth proportional to 156,974.06, 235,461.33 and 72,688.30 is: 109,032.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,974.06 : 235,461.33 = 72,688.30 : x
  2. Step 2: Convert to fraction form
    156,974.06/235,461.33 = 72,688.30/x
  3. Step 3: Cross multiply
    156,974.06x = 235,461.33 × 72,688.30
  4. Step 4: Simplify right side
    156,974.06x = 17,115,283,204.79
  5. Step 5: Solve for x
    x = 17,115,283,204.79/156,974.06
  6. Step 6: Final answer
    x = 109,032.56

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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.