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Finding the Fourth Proportional to 115,299.40, 159,092.76 and 64,998.40

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Solution

The fourth proportional to 115,299.40, 159,092.76 and 64,998.40 is: 89,686.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,299.40 : 159,092.76 = 64,998.40 : x
  2. Step 2: Convert to fraction form
    115,299.40/159,092.76 = 64,998.40/x
  3. Step 3: Cross multiply
    115,299.40x = 159,092.76 × 64,998.40
  4. Step 4: Simplify right side
    115,299.40x = 10,340,774,851.58
  5. Step 5: Solve for x
    x = 10,340,774,851.58/115,299.40
  6. Step 6: Final answer
    x = 89,686.29

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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.