Home / 129,225.23-193,640.00-86,948.72

Finding the Fourth Proportional to 129,225.23, 193,640.00 and 86,948.72

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Solution

The fourth proportional to 129,225.23, 193,640.00 and 86,948.72 is: 130,289.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,225.23 : 193,640.00 = 86,948.72 : x
  2. Step 2: Convert to fraction form
    129,225.23/193,640.00 = 86,948.72/x
  3. Step 3: Cross multiply
    129,225.23x = 193,640.00 × 86,948.72
  4. Step 4: Simplify right side
    129,225.23x = 16,836,748,737.86
  5. Step 5: Solve for x
    x = 16,836,748,737.86/129,225.23
  6. Step 6: Final answer
    x = 130,289.95

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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.