Home / 142,519,921.20-196,679,777.40-77,329,825.20

Finding the Fourth Proportional to 142,519,921.20, 196,679,777.40 and 77,329,825.20

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Solution

The fourth proportional to 142,519,921.20, 196,679,777.40 and 77,329,825.20 is: 106,716,399.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,519,921.20 : 196,679,777.40 = 77,329,825.20 : x
  2. Step 2: Convert to fraction form
    142,519,921.20/196,679,777.40 = 77,329,825.20/x
  3. Step 3: Cross multiply
    142,519,921.20x = 196,679,777.40 × 77,329,825.20
  4. Step 4: Simplify right side
    142,519,921.20x = 15,209,212,806,716,912
  5. Step 5: Solve for x
    x = 15,209,212,806,716,912/142,519,921.20
  6. Step 6: Final answer
    x = 106,716,399.21

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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.