Home / 117,650.40-162,442.08-72,389.04

Finding the Fourth Proportional to 117,650.40, 162,442.08 and 72,389.04

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Solution

The fourth proportional to 117,650.40, 162,442.08 and 72,389.04 is: 99,948.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,650.40 : 162,442.08 = 72,389.04 : x
  2. Step 2: Convert to fraction form
    117,650.40/162,442.08 = 72,389.04/x
  3. Step 3: Cross multiply
    117,650.40x = 162,442.08 × 72,389.04
  4. Step 4: Simplify right side
    117,650.40x = 11,759,026,226.80
  5. Step 5: Solve for x
    x = 11,759,026,226.80/117,650.40
  6. Step 6: Final answer
    x = 99,948.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.