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Finding the Fourth Proportional to 103,393.56, 155,091.15 and 56,620.92

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Solution

The fourth proportional to 103,393.56, 155,091.15 and 56,620.92 is: 84,931.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,393.56 : 155,091.15 = 56,620.92 : x
  2. Step 2: Convert to fraction form
    103,393.56/155,091.15 = 56,620.92/x
  3. Step 3: Cross multiply
    103,393.56x = 155,091.15 × 56,620.92
  4. Step 4: Simplify right side
    103,393.56x = 8,781,403,596.86
  5. Step 5: Solve for x
    x = 8,781,403,596.86/103,393.56
  6. Step 6: Final answer
    x = 84,931.82

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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.