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Finding the Fourth Proportional to 120,792.28, 181,160.88 and 45,920.74

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Solution

The fourth proportional to 120,792.28, 181,160.88 and 45,920.74 is: 68,870.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,792.28 : 181,160.88 = 45,920.74 : x
  2. Step 2: Convert to fraction form
    120,792.28/181,160.88 = 45,920.74/x
  3. Step 3: Cross multiply
    120,792.28x = 181,160.88 × 45,920.74
  4. Step 4: Simplify right side
    120,792.28x = 8,319,041,668.65
  5. Step 5: Solve for x
    x = 8,319,041,668.65/120,792.28
  6. Step 6: Final answer
    x = 68,870.64

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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.