Home / 142,221,320.55-196,281,350.28-80,345,644.92

Finding the Fourth Proportional to 142,221,320.55, 196,281,350.28 and 80,345,644.92

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Solution

The fourth proportional to 142,221,320.55, 196,281,350.28 and 80,345,644.92 is: 110,885,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,221,320.55 : 196,281,350.28 = 80,345,644.92 : x
  2. Step 2: Convert to fraction form
    142,221,320.55/196,281,350.28 = 80,345,644.92/x
  3. Step 3: Cross multiply
    142,221,320.55x = 196,281,350.28 × 80,345,644.92
  4. Step 4: Simplify right side
    142,221,320.55x = 15,770,351,674,015,024
  5. Step 5: Solve for x
    x = 15,770,351,674,015,024/142,221,320.55
  6. Step 6: Final answer
    x = 110,885,988.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.