Home / 117,390.40-162,027.66-72,079.24

Finding the Fourth Proportional to 117,390.40, 162,027.66 and 72,079.24

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Solution

The fourth proportional to 117,390.40, 162,027.66 and 72,079.24 is: 99,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,390.40 : 162,027.66 = 72,079.24 : x
  2. Step 2: Convert to fraction form
    117,390.40/162,027.66 = 72,079.24/x
  3. Step 3: Cross multiply
    117,390.40x = 162,027.66 × 72,079.24
  4. Step 4: Simplify right side
    117,390.40x = 11,678,830,591.78
  5. Step 5: Solve for x
    x = 11,678,830,591.78/117,390.40
  6. Step 6: Final answer
    x = 99,487.10

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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.