Home / 156,901.86-216,528.80-85,286.72

Finding the Fourth Proportional to 156,901.86, 216,528.80 and 85,286.72

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Solution

The fourth proportional to 156,901.86, 216,528.80 and 85,286.72 is: 117,697.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,901.86 : 216,528.80 = 85,286.72 : x
  2. Step 2: Convert to fraction form
    156,901.86/216,528.80 = 85,286.72/x
  3. Step 3: Cross multiply
    156,901.86x = 216,528.80 × 85,286.72
  4. Step 4: Simplify right side
    156,901.86x = 18,467,031,252.42
  5. Step 5: Solve for x
    x = 18,467,031,252.42/156,901.86
  6. Step 6: Final answer
    x = 117,697.98

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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.