Home / 129,439.90-194,159.70-40,701.16

Finding the Fourth Proportional to 129,439.90, 194,159.70 and 40,701.16

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Solution

The fourth proportional to 129,439.90, 194,159.70 and 40,701.16 is: 61,051.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,439.90 : 194,159.70 = 40,701.16 : x
  2. Step 2: Convert to fraction form
    129,439.90/194,159.70 = 40,701.16/x
  3. Step 3: Cross multiply
    129,439.90x = 194,159.70 × 40,701.16
  4. Step 4: Simplify right side
    129,439.90x = 7,902,525,015.25
  5. Step 5: Solve for x
    x = 7,902,525,015.25/129,439.90
  6. Step 6: Final answer
    x = 61,051.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.