Home / 156,934.35-216,564.71-85,312.53

Finding the Fourth Proportional to 156,934.35, 216,564.71 and 85,312.53

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Solution

The fourth proportional to 156,934.35, 216,564.71 and 85,312.53 is: 117,728.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,934.35 : 216,564.71 = 85,312.53 : x
  2. Step 2: Convert to fraction form
    156,934.35/216,564.71 = 85,312.53/x
  3. Step 3: Cross multiply
    156,934.35x = 216,564.71 × 85,312.53
  4. Step 4: Simplify right side
    156,934.35x = 18,475,682,892.25
  5. Step 5: Solve for x
    x = 18,475,682,892.25/156,934.35
  6. Step 6: Final answer
    x = 117,728.74

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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.