Home / 142,016,657.40-213,024,986.10-80,794,654.20

Finding the Fourth Proportional to 142,016,657.40, 213,024,986.10 and 80,794,654.20

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Solution

The fourth proportional to 142,016,657.40, 213,024,986.10 and 80,794,654.20 is: 121,191,981.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,016,657.40 : 213,024,986.10 = 80,794,654.20 : x
  2. Step 2: Convert to fraction form
    142,016,657.40/213,024,986.10 = 80,794,654.20/x
  3. Step 3: Cross multiply
    142,016,657.40x = 213,024,986.10 × 80,794,654.20
  4. Step 4: Simplify right side
    142,016,657.40x = 17,211,280,087,909,306
  5. Step 5: Solve for x
    x = 17,211,280,087,909,306/142,016,657.40
  6. Step 6: Final answer
    x = 121,191,981.30

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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.