Home / 91,509.12-137,218.60-38,184.96

Finding the Fourth Proportional to 91,509.12, 137,218.60 and 38,184.96

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Solution

The fourth proportional to 91,509.12, 137,218.60 and 38,184.96 is: 57,258.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,509.12 : 137,218.60 = 38,184.96 : x
  2. Step 2: Convert to fraction form
    91,509.12/137,218.60 = 38,184.96/x
  3. Step 3: Cross multiply
    91,509.12x = 137,218.60 × 38,184.96
  4. Step 4: Simplify right side
    91,509.12x = 5,239,686,752.26
  5. Step 5: Solve for x
    x = 5,239,686,752.26/91,509.12
  6. Step 6: Final answer
    x = 57,258.63

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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.