Home / 142,548.18-196,711.62-78,888.66

Finding the Fourth Proportional to 142,548.18, 196,711.62 and 78,888.66

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Solution

The fourth proportional to 142,548.18, 196,711.62 and 78,888.66 is: 108,863.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,548.18 : 196,711.62 = 78,888.66 : x
  2. Step 2: Convert to fraction form
    142,548.18/196,711.62 = 78,888.66/x
  3. Step 3: Cross multiply
    142,548.18x = 196,711.62 × 78,888.66
  4. Step 4: Simplify right side
    142,548.18x = 15,518,316,108.23
  5. Step 5: Solve for x
    x = 15,518,316,108.23/142,548.18
  6. Step 6: Final answer
    x = 108,863.66

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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.