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Finding the Fourth Proportional to 115,430.88, 159,283.80 and 67,019.88

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Solution

The fourth proportional to 115,430.88, 159,283.80 and 67,019.88 is: 92,481.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,430.88 : 159,283.80 = 67,019.88 : x
  2. Step 2: Convert to fraction form
    115,430.88/159,283.80 = 67,019.88/x
  3. Step 3: Cross multiply
    115,430.88x = 159,283.80 × 67,019.88
  4. Step 4: Simplify right side
    115,430.88x = 10,675,181,161.94
  5. Step 5: Solve for x
    x = 10,675,181,161.94/115,430.88
  6. Step 6: Final answer
    x = 92,481.16

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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.