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Finding the Fourth Proportional to 91,738.90, 137,737.95 and 56,746.90

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Solution

The fourth proportional to 91,738.90, 137,737.95 and 56,746.90 is: 85,200.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,738.90 : 137,737.95 = 56,746.90 : x
  2. Step 2: Convert to fraction form
    91,738.90/137,737.95 = 56,746.90/x
  3. Step 3: Cross multiply
    91,738.90x = 137,737.95 × 56,746.90
  4. Step 4: Simplify right side
    91,738.90x = 7,816,201,674.86
  5. Step 5: Solve for x
    x = 7,816,201,674.86/91,738.90
  6. Step 6: Final answer
    x = 85,200.52

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1.5x scale

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.