Home / 128,104.74-176,792.73-71,516.10

Finding the Fourth Proportional to 128,104.74, 176,792.73 and 71,516.10

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Solution

The fourth proportional to 128,104.74, 176,792.73 and 71,516.10 is: 98,696.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,104.74 : 176,792.73 = 71,516.10 : x
  2. Step 2: Convert to fraction form
    128,104.74/176,792.73 = 71,516.10/x
  3. Step 3: Cross multiply
    128,104.74x = 176,792.73 × 71,516.10
  4. Step 4: Simplify right side
    128,104.74x = 12,643,526,557.95
  5. Step 5: Solve for x
    x = 12,643,526,557.95/128,104.74
  6. Step 6: Final answer
    x = 98,696.79

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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.