Home / 156,904.86-216,532.95-85,289.73

Finding the Fourth Proportional to 156,904.86, 216,532.95 and 85,289.73

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Solution

The fourth proportional to 156,904.86, 216,532.95 and 85,289.73 is: 117,702.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,904.86 : 216,532.95 = 85,289.73 : x
  2. Step 2: Convert to fraction form
    156,904.86/216,532.95 = 85,289.73/x
  3. Step 3: Cross multiply
    156,904.86x = 216,532.95 × 85,289.73
  4. Step 4: Simplify right side
    156,904.86x = 18,468,036,841.60
  5. Step 5: Solve for x
    x = 18,468,036,841.60/156,904.86
  6. Step 6: Final answer
    x = 117,702.13

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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.