Home / 91,171.28-125,699.40-74,758.01

Finding the Fourth Proportional to 91,171.28, 125,699.40 and 74,758.01

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Solution

The fourth proportional to 91,171.28, 125,699.40 and 74,758.01 is: 103,070.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,171.28 : 125,699.40 = 74,758.01 : x
  2. Step 2: Convert to fraction form
    91,171.28/125,699.40 = 74,758.01/x
  3. Step 3: Cross multiply
    91,171.28x = 125,699.40 × 74,758.01
  4. Step 4: Simplify right side
    91,171.28x = 9,397,036,874.84
  5. Step 5: Solve for x
    x = 9,397,036,874.84/91,171.28
  6. Step 6: Final answer
    x = 103,070.15

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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.