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Finding the Fourth Proportional to 80,298.88, 120,332.88 and 45,164.32

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Solution

The fourth proportional to 80,298.88, 120,332.88 and 45,164.32 is: 67,681.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,298.88 : 120,332.88 = 45,164.32 : x
  2. Step 2: Convert to fraction form
    80,298.88/120,332.88 = 45,164.32/x
  3. Step 3: Cross multiply
    80,298.88x = 120,332.88 × 45,164.32
  4. Step 4: Simplify right side
    80,298.88x = 5,434,752,698.84
  5. Step 5: Solve for x
    x = 5,434,752,698.84/80,298.88
  6. Step 6: Final answer
    x = 67,681.55

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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.