Home / 129,200.19-193,837.95-79,312.29

Finding the Fourth Proportional to 129,200.19, 193,837.95 and 79,312.29

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Solution

The fourth proportional to 129,200.19, 193,837.95 and 79,312.29 is: 118,991.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,200.19 : 193,837.95 = 79,312.29 : x
  2. Step 2: Convert to fraction form
    129,200.19/193,837.95 = 79,312.29/x
  3. Step 3: Cross multiply
    129,200.19x = 193,837.95 × 79,312.29
  4. Step 4: Simplify right side
    129,200.19x = 15,373,731,703.41
  5. Step 5: Solve for x
    x = 15,373,731,703.41/129,200.19
  6. Step 6: Final answer
    x = 118,991.56

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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.