Home / 129,259.69-194,071.19-66,125.10

Finding the Fourth Proportional to 129,259.69, 194,071.19 and 66,125.10

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Solution

The fourth proportional to 129,259.69, 194,071.19 and 66,125.10 is: 99,280.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,259.69 : 194,071.19 = 66,125.10 : x
  2. Step 2: Convert to fraction form
    129,259.69/194,071.19 = 66,125.10/x
  3. Step 3: Cross multiply
    129,259.69x = 194,071.19 × 66,125.10
  4. Step 4: Simplify right side
    129,259.69x = 12,832,976,639.23
  5. Step 5: Solve for x
    x = 12,832,976,639.23/129,259.69
  6. Step 6: Final answer
    x = 99,280.58

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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.