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Finding the Fourth Proportional to 124,698.78, 172,085.16 and 68,110.14

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Solution

The fourth proportional to 124,698.78, 172,085.16 and 68,110.14 is: 93,992.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,698.78 : 172,085.16 = 68,110.14 : x
  2. Step 2: Convert to fraction form
    124,698.78/172,085.16 = 68,110.14/x
  3. Step 3: Cross multiply
    124,698.78x = 172,085.16 × 68,110.14
  4. Step 4: Simplify right side
    124,698.78x = 11,720,744,339.52
  5. Step 5: Solve for x
    x = 11,720,744,339.52/124,698.78
  6. Step 6: Final answer
    x = 93,992.45

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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.