Home / 142,338.43-196,427.00-77,807.93

Finding the Fourth Proportional to 142,338.43, 196,427.00 and 77,807.93

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Solution

The fourth proportional to 142,338.43, 196,427.00 and 77,807.93 is: 107,374.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,338.43 : 196,427.00 = 77,807.93 : x
  2. Step 2: Convert to fraction form
    142,338.43/196,427.00 = 77,807.93/x
  3. Step 3: Cross multiply
    142,338.43x = 196,427.00 × 77,807.93
  4. Step 4: Simplify right side
    142,338.43x = 15,283,577,478.49
  5. Step 5: Solve for x
    x = 15,283,577,478.49/142,338.43
  6. Step 6: Final answer
    x = 107,374.92

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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.