Home / 142,319,899.60-213,479,849.40-84,121,205.20

Finding the Fourth Proportional to 142,319,899.60, 213,479,849.40 and 84,121,205.20

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Solution

The fourth proportional to 142,319,899.60, 213,479,849.40 and 84,121,205.20 is: 126,181,807.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,319,899.60 : 213,479,849.40 = 84,121,205.20 : x
  2. Step 2: Convert to fraction form
    142,319,899.60/213,479,849.40 = 84,121,205.20/x
  3. Step 3: Cross multiply
    142,319,899.60x = 213,479,849.40 × 84,121,205.20
  4. Step 4: Simplify right side
    142,319,899.60x = 17,958,182,217,442,498
  5. Step 5: Solve for x
    x = 17,958,182,217,442,498/142,319,899.60
  6. Step 6: Final answer
    x = 126,181,807.80

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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.