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Finding the Fourth Proportional to 117,785.76, 162,597.42 and 77,520.66

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Solution

The fourth proportional to 117,785.76, 162,597.42 and 77,520.66 is: 107,013.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,785.76 : 162,597.42 = 77,520.66 : x
  2. Step 2: Convert to fraction form
    117,785.76/162,597.42 = 77,520.66/x
  3. Step 3: Cross multiply
    117,785.76x = 162,597.42 × 77,520.66
  4. Step 4: Simplify right side
    117,785.76x = 12,604,659,312.70
  5. Step 5: Solve for x
    x = 12,604,659,312.70/117,785.76
  6. Step 6: Final answer
    x = 107,013.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.