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Finding the Fourth Proportional to 169,763.40, 254,647.26 and 86,715.72

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Solution

The fourth proportional to 169,763.40, 254,647.26 and 86,715.72 is: 130,074.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,763.40 : 254,647.26 = 86,715.72 : x
  2. Step 2: Convert to fraction form
    169,763.40/254,647.26 = 86,715.72/x
  3. Step 3: Cross multiply
    169,763.40x = 254,647.26 × 86,715.72
  4. Step 4: Simplify right side
    169,763.40x = 22,081,920,496.93
  5. Step 5: Solve for x
    x = 22,081,920,496.93/169,763.40
  6. Step 6: Final answer
    x = 130,074.68

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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.