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Finding the Fourth Proportional to 77,108.29, 114,960.01 and 75,169.15

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Solution

The fourth proportional to 77,108.29, 114,960.01 and 75,169.15 is: 112,068.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,108.29 : 114,960.01 = 75,169.15 : x
  2. Step 2: Convert to fraction form
    77,108.29/114,960.01 = 75,169.15/x
  3. Step 3: Cross multiply
    77,108.29x = 114,960.01 × 75,169.15
  4. Step 4: Simplify right side
    77,108.29x = 8,641,446,235.69
  5. Step 5: Solve for x
    x = 8,641,446,235.69/77,108.29
  6. Step 6: Final answer
    x = 112,068.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.