Home / 156,960.06-216,603.78-85,340.10

Finding the Fourth Proportional to 156,960.06, 216,603.78 and 85,340.10

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Solution

The fourth proportional to 156,960.06, 216,603.78 and 85,340.10 is: 117,768.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,960.06 : 216,603.78 = 85,340.10 : x
  2. Step 2: Convert to fraction form
    156,960.06/216,603.78 = 85,340.10/x
  3. Step 3: Cross multiply
    156,960.06x = 216,603.78 × 85,340.10
  4. Step 4: Simplify right side
    156,960.06x = 18,484,988,245.58
  5. Step 5: Solve for x
    x = 18,484,988,245.58/156,960.06
  6. Step 6: Final answer
    x = 117,768.74

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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.