Home / 156,811.10-216,401.95-85,191.18

Finding the Fourth Proportional to 156,811.10, 216,401.95 and 85,191.18

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Solution

The fourth proportional to 156,811.10, 216,401.95 and 85,191.18 is: 117,565.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,811.10 : 216,401.95 = 85,191.18 : x
  2. Step 2: Convert to fraction form
    156,811.10/216,401.95 = 85,191.18/x
  3. Step 3: Cross multiply
    156,811.10x = 216,401.95 × 85,191.18
  4. Step 4: Simplify right side
    156,811.10x = 18,435,536,392.79
  5. Step 5: Solve for x
    x = 18,435,536,392.79/156,811.10
  6. Step 6: Final answer
    x = 117,565.26

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1.5x scale

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.