Home / 156,961.65-216,607.55-85,341.95

Finding the Fourth Proportional to 156,961.65, 216,607.55 and 85,341.95

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Solution

The fourth proportional to 156,961.65, 216,607.55 and 85,341.95 is: 117,772.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,961.65 : 216,607.55 = 85,341.95 : x
  2. Step 2: Convert to fraction form
    156,961.65/216,607.55 = 85,341.95/x
  3. Step 3: Cross multiply
    156,961.65x = 216,607.55 × 85,341.95
  4. Step 4: Simplify right side
    156,961.65x = 18,485,710,275.01
  5. Step 5: Solve for x
    x = 18,485,710,275.01/156,961.65
  6. Step 6: Final answer
    x = 117,772.15

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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.