Home / 91,725.20-137,417.70-52,164.80

Finding the Fourth Proportional to 91,725.20, 137,417.70 and 52,164.80

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Solution

The fourth proportional to 91,725.20, 137,417.70 and 52,164.80 is: 78,150.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,725.20 : 137,417.70 = 52,164.80 : x
  2. Step 2: Convert to fraction form
    91,725.20/137,417.70 = 52,164.80/x
  3. Step 3: Cross multiply
    91,725.20x = 137,417.70 × 52,164.80
  4. Step 4: Simplify right side
    91,725.20x = 7,168,366,836.96
  5. Step 5: Solve for x
    x = 7,168,366,836.96/91,725.20
  6. Step 6: Final answer
    x = 78,150.46

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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.