Home / 91,639.16-137,225.40-60,379.64

Finding the Fourth Proportional to 91,639.16, 137,225.40 and 60,379.64

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Solution

The fourth proportional to 91,639.16, 137,225.40 and 60,379.64 is: 90,415.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,639.16 : 137,225.40 = 60,379.64 : x
  2. Step 2: Convert to fraction form
    91,639.16/137,225.40 = 60,379.64/x
  3. Step 3: Cross multiply
    91,639.16x = 137,225.40 × 60,379.64
  4. Step 4: Simplify right side
    91,639.16x = 8,285,620,250.86
  5. Step 5: Solve for x
    x = 8,285,620,250.86/91,639.16
  6. Step 6: Final answer
    x = 90,415.72

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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.