Home / 91,718.10-137,577.15-90,551.70

Finding the Fourth Proportional to 91,718.10, 137,577.15 and 90,551.70

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Solution

The fourth proportional to 91,718.10, 137,577.15 and 90,551.70 is: 135,827.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,718.10 : 137,577.15 = 90,551.70 : x
  2. Step 2: Convert to fraction form
    91,718.10/137,577.15 = 90,551.70/x
  3. Step 3: Cross multiply
    91,718.10x = 137,577.15 × 90,551.70
  4. Step 4: Simplify right side
    91,718.10x = 12,457,844,813.66
  5. Step 5: Solve for x
    x = 12,457,844,813.66/91,718.10
  6. Step 6: Final answer
    x = 135,827.55

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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.