Home / 117,639.27-176,287.59-54,478.71

Finding the Fourth Proportional to 117,639.27, 176,287.59 and 54,478.71

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Solution

The fourth proportional to 117,639.27, 176,287.59 and 54,478.71 is: 81,638.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,639.27 : 176,287.59 = 54,478.71 : x
  2. Step 2: Convert to fraction form
    117,639.27/176,287.59 = 54,478.71/x
  3. Step 3: Cross multiply
    117,639.27x = 176,287.59 × 54,478.71
  4. Step 4: Simplify right side
    117,639.27x = 9,603,920,492.21
  5. Step 5: Solve for x
    x = 9,603,920,492.21/117,639.27
  6. Step 6: Final answer
    x = 81,638.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.