Home / 156,827.75-216,423.09-85,207.95

Finding the Fourth Proportional to 156,827.75, 216,423.09 and 85,207.95

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Solution

The fourth proportional to 156,827.75, 216,423.09 and 85,207.95 is: 117,587.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,827.75 : 216,423.09 = 85,207.95 : x
  2. Step 2: Convert to fraction form
    156,827.75/216,423.09 = 85,207.95/x
  3. Step 3: Cross multiply
    156,827.75x = 216,423.09 × 85,207.95
  4. Step 4: Simplify right side
    156,827.75x = 18,440,967,831.57
  5. Step 5: Solve for x
    x = 18,440,967,831.57/156,827.75
  6. Step 6: Final answer
    x = 117,587.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.