Home / 156,867.80-216,476.51-85,247.81

Finding the Fourth Proportional to 156,867.80, 216,476.51 and 85,247.81

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Solution

The fourth proportional to 156,867.80, 216,476.51 and 85,247.81 is: 117,641.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,867.80 : 216,476.51 = 85,247.81 : x
  2. Step 2: Convert to fraction form
    156,867.80/216,476.51 = 85,247.81/x
  3. Step 3: Cross multiply
    156,867.80x = 216,476.51 × 85,247.81
  4. Step 4: Simplify right side
    156,867.80x = 18,454,146,885.32
  5. Step 5: Solve for x
    x = 18,454,146,885.32/156,867.80
  6. Step 6: Final answer
    x = 117,641.40

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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.