Home / 207,917.16-286,929.42-121,938.16

Finding the Fourth Proportional to 207,917.16, 286,929.42 and 121,938.16

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Solution

The fourth proportional to 207,917.16, 286,929.42 and 121,938.16 is: 168,276.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,917.16 : 286,929.42 = 121,938.16 : x
  2. Step 2: Convert to fraction form
    207,917.16/286,929.42 = 121,938.16/x
  3. Step 3: Cross multiply
    207,917.16x = 286,929.42 × 121,938.16
  4. Step 4: Simplify right side
    207,917.16x = 34,987,643,785.17
  5. Step 5: Solve for x
    x = 34,987,643,785.17/207,917.16
  6. Step 6: Final answer
    x = 168,276.85

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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.