Home / 142,060.80-196,077.40-81,666.48

Finding the Fourth Proportional to 142,060.80, 196,077.40 and 81,666.48

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Solution

The fourth proportional to 142,060.80, 196,077.40 and 81,666.48 is: 112,719.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,060.80 : 196,077.40 = 81,666.48 : x
  2. Step 2: Convert to fraction form
    142,060.80/196,077.40 = 81,666.48/x
  3. Step 3: Cross multiply
    142,060.80x = 196,077.40 × 81,666.48
  4. Step 4: Simplify right side
    142,060.80x = 16,012,951,065.55
  5. Step 5: Solve for x
    x = 16,012,951,065.55/142,060.80
  6. Step 6: Final answer
    x = 112,719.00

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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.