Home / 156,943.86-216,586.80-85,328.70

Finding the Fourth Proportional to 156,943.86, 216,586.80 and 85,328.70

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Solution

The fourth proportional to 156,943.86, 216,586.80 and 85,328.70 is: 117,755.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,943.86 : 216,586.80 = 85,328.70 : x
  2. Step 2: Convert to fraction form
    156,943.86/216,586.80 = 85,328.70/x
  3. Step 3: Cross multiply
    156,943.86x = 216,586.80 × 85,328.70
  4. Step 4: Simplify right side
    156,943.86x = 18,481,070,081.16
  5. Step 5: Solve for x
    x = 18,481,070,081.16/156,943.86
  6. Step 6: Final answer
    x = 117,755.93

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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.