Home / 142,634,538.72-196,836,449.28-77,444,442.72

Finding the Fourth Proportional to 142,634,538.72, 196,836,449.28 and 77,444,442.72

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Solution

The fourth proportional to 142,634,538.72, 196,836,449.28 and 77,444,442.72 is: 106,873,757.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,634,538.72 : 196,836,449.28 = 77,444,442.72 : x
  2. Step 2: Convert to fraction form
    142,634,538.72/196,836,449.28 = 77,444,442.72/x
  3. Step 3: Cross multiply
    142,634,538.72x = 196,836,449.28 × 77,444,442.72
  4. Step 4: Simplify right side
    142,634,538.72x = 15,243,889,121,473,146
  5. Step 5: Solve for x
    x = 15,243,889,121,473,146/142,634,538.72
  6. Step 6: Final answer
    x = 106,873,757.63

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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.