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Finding the Fourth Proportional to 115,290.91, 171,790.25 and 102,714.29

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Solution

The fourth proportional to 115,290.91, 171,790.25 and 102,714.29 is: 153,050.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,290.91 : 171,790.25 = 102,714.29 : x
  2. Step 2: Convert to fraction form
    115,290.91/171,790.25 = 102,714.29/x
  3. Step 3: Cross multiply
    115,290.91x = 171,790.25 × 102,714.29
  4. Step 4: Simplify right side
    115,290.91x = 17,645,313,557.67
  5. Step 5: Solve for x
    x = 17,645,313,557.67/115,290.91
  6. Step 6: Final answer
    x = 153,050.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.