Home / 139,968,165.40-209,952,248.10-129,764,498.20

Finding the Fourth Proportional to 139,968,165.40, 209,952,248.10 and 129,764,498.20

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Solution

The fourth proportional to 139,968,165.40, 209,952,248.10 and 129,764,498.20 is: 194,646,747.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,968,165.40 : 209,952,248.10 = 129,764,498.20 : x
  2. Step 2: Convert to fraction form
    139,968,165.40/209,952,248.10 = 129,764,498.20/x
  3. Step 3: Cross multiply
    139,968,165.40x = 209,952,248.10 × 129,764,498.20
  4. Step 4: Simplify right side
    139,968,165.40x = 27,244,348,120,658,404
  5. Step 5: Solve for x
    x = 27,244,348,120,658,404/139,968,165.40
  6. Step 6: Final answer
    x = 194,646,747.30

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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.