Home / 287,364,148.80-431,046,223.20-126,121,012.80

Finding the Fourth Proportional to 287,364,148.80, 431,046,223.20 and 126,121,012.80

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Solution

The fourth proportional to 287,364,148.80, 431,046,223.20 and 126,121,012.80 is: 189,181,519.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,364,148.80 : 431,046,223.20 = 126,121,012.80 : x
  2. Step 2: Convert to fraction form
    287,364,148.80/431,046,223.20 = 126,121,012.80/x
  3. Step 3: Cross multiply
    287,364,148.80x = 431,046,223.20 × 126,121,012.80
  4. Step 4: Simplify right side
    287,364,148.80x = 54,363,986,233,598,856
  5. Step 5: Solve for x
    x = 54,363,986,233,598,856/287,364,148.80
  6. Step 6: Final answer
    x = 189,181,519.20

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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.