Home / 122,282.85-168,678.68-76,888.90

Finding the Fourth Proportional to 122,282.85, 168,678.68 and 76,888.90

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Solution

The fourth proportional to 122,282.85, 168,678.68 and 76,888.90 is: 106,061.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,282.85 : 168,678.68 = 76,888.90 : x
  2. Step 2: Convert to fraction form
    122,282.85/168,678.68 = 76,888.90/x
  3. Step 3: Cross multiply
    122,282.85x = 168,678.68 × 76,888.90
  4. Step 4: Simplify right side
    122,282.85x = 12,969,518,158.65
  5. Step 5: Solve for x
    x = 12,969,518,158.65/122,282.85
  6. Step 6: Final answer
    x = 106,061.63

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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.