Home / 127,940,742.38-176,543,051.61-72,182,912.20

Finding the Fourth Proportional to 127,940,742.38, 176,543,051.61 and 72,182,912.20

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Solution

The fourth proportional to 127,940,742.38, 176,543,051.61 and 72,182,912.20 is: 99,603,858.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,940,742.38 : 176,543,051.61 = 72,182,912.20 : x
  2. Step 2: Convert to fraction form
    127,940,742.38/176,543,051.61 = 72,182,912.20/x
  3. Step 3: Cross multiply
    127,940,742.38x = 176,543,051.61 × 72,182,912.20
  4. Step 4: Simplify right side
    127,940,742.38x = 12,743,391,593,884,700
  5. Step 5: Solve for x
    x = 12,743,391,593,884,700/127,940,742.38
  6. Step 6: Final answer
    x = 99,603,858.45

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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.