Home / 156,931.35-216,566.63-85,311.42

Finding the Fourth Proportional to 156,931.35, 216,566.63 and 85,311.42

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Solution

The fourth proportional to 156,931.35, 216,566.63 and 85,311.42 is: 117,730.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,931.35 : 216,566.63 = 85,311.42 : x
  2. Step 2: Convert to fraction form
    156,931.35/216,566.63 = 85,311.42/x
  3. Step 3: Cross multiply
    156,931.35x = 216,566.63 × 85,311.42
  4. Step 4: Simplify right side
    156,931.35x = 18,475,606,729.91
  5. Step 5: Solve for x
    x = 18,475,606,729.91/156,931.35
  6. Step 6: Final answer
    x = 117,730.50

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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.