Home / 142,520.13-196,674.75-77,989.11

Finding the Fourth Proportional to 142,520.13, 196,674.75 and 77,989.11

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Solution

The fourth proportional to 142,520.13, 196,674.75 and 77,989.11 is: 107,623.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,520.13 : 196,674.75 = 77,989.11 : x
  2. Step 2: Convert to fraction form
    142,520.13/196,674.75 = 77,989.11/x
  3. Step 3: Cross multiply
    142,520.13x = 196,674.75 × 77,989.11
  4. Step 4: Simplify right side
    142,520.13x = 15,338,488,050.75
  5. Step 5: Solve for x
    x = 15,338,488,050.75/142,520.13
  6. Step 6: Final answer
    x = 107,623.31

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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.