Home / 129,587.85-194,328.72-45,330.03

Finding the Fourth Proportional to 129,587.85, 194,328.72 and 45,330.03

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Solution

The fourth proportional to 129,587.85, 194,328.72 and 45,330.03 is: 67,976.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,587.85 : 194,328.72 = 45,330.03 : x
  2. Step 2: Convert to fraction form
    129,587.85/194,328.72 = 45,330.03/x
  3. Step 3: Cross multiply
    129,587.85x = 194,328.72 × 45,330.03
  4. Step 4: Simplify right side
    129,587.85x = 8,808,926,707.46
  5. Step 5: Solve for x
    x = 8,808,926,707.46/129,587.85
  6. Step 6: Final answer
    x = 67,976.49

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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.