Home / 156,901.86-216,523.27-85,281.66

Finding the Fourth Proportional to 156,901.86, 216,523.27 and 85,281.66

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Solution

The fourth proportional to 156,901.86, 216,523.27 and 85,281.66 is: 117,687.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,901.86 : 216,523.27 = 85,281.66 : x
  2. Step 2: Convert to fraction form
    156,901.86/216,523.27 = 85,281.66/x
  3. Step 3: Cross multiply
    156,901.86x = 216,523.27 × 85,281.66
  4. Step 4: Simplify right side
    156,901.86x = 18,465,463,894.23
  5. Step 5: Solve for x
    x = 18,465,463,894.23/156,901.86
  6. Step 6: Final answer
    x = 117,687.99

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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.