Home / 117,720.50-176,407.05-69,639.38

Finding the Fourth Proportional to 117,720.50, 176,407.05 and 69,639.38

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Solution

The fourth proportional to 117,720.50, 176,407.05 and 69,639.38 is: 104,356.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,720.50 : 176,407.05 = 69,639.38 : x
  2. Step 2: Convert to fraction form
    117,720.50/176,407.05 = 69,639.38/x
  3. Step 3: Cross multiply
    117,720.50x = 176,407.05 × 69,639.38
  4. Step 4: Simplify right side
    117,720.50x = 12,284,876,707.59
  5. Step 5: Solve for x
    x = 12,284,876,707.59/117,720.50
  6. Step 6: Final answer
    x = 104,356.31

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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.