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Finding the Fourth Proportional to 115,422.59, 159,282.54 and 64,432.37

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Solution

The fourth proportional to 115,422.59, 159,282.54 and 64,432.37 is: 88,916.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,422.59 : 159,282.54 = 64,432.37 : x
  2. Step 2: Convert to fraction form
    115,422.59/159,282.54 = 64,432.37/x
  3. Step 3: Cross multiply
    115,422.59x = 159,282.54 × 64,432.37
  4. Step 4: Simplify right side
    115,422.59x = 10,262,950,755.41
  5. Step 5: Solve for x
    x = 10,262,950,755.41/115,422.59
  6. Step 6: Final answer
    x = 88,916.31

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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.