Home / 140,921.60-211,382.40-42,412.80

Finding the Fourth Proportional to 140,921.60, 211,382.40 and 42,412.80

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Solution

The fourth proportional to 140,921.60, 211,382.40 and 42,412.80 is: 63,619.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,921.60 : 211,382.40 = 42,412.80 : x
  2. Step 2: Convert to fraction form
    140,921.60/211,382.40 = 42,412.80/x
  3. Step 3: Cross multiply
    140,921.60x = 211,382.40 × 42,412.80
  4. Step 4: Simplify right side
    140,921.60x = 8,965,319,454.72
  5. Step 5: Solve for x
    x = 8,965,319,454.72/140,921.60
  6. Step 6: Final answer
    x = 63,619.20

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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.