Home / 78,767.72-118,206.98-71,238.92

Finding the Fourth Proportional to 78,767.72, 118,206.98 and 71,238.92

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Solution

The fourth proportional to 78,767.72, 118,206.98 and 71,238.92 is: 106,908.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,767.72 : 118,206.98 = 71,238.92 : x
  2. Step 2: Convert to fraction form
    78,767.72/118,206.98 = 71,238.92/x
  3. Step 3: Cross multiply
    78,767.72x = 118,206.98 × 71,238.92
  4. Step 4: Simplify right side
    78,767.72x = 8,420,937,591.66
  5. Step 5: Solve for x
    x = 8,420,937,591.66/78,767.72
  6. Step 6: Final answer
    x = 106,908.48

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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.