Home / 115,799.15-159,805.68-64,811.45

Finding the Fourth Proportional to 115,799.15, 159,805.68 and 64,811.45

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Solution

The fourth proportional to 115,799.15, 159,805.68 and 64,811.45 is: 89,441.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,799.15 : 159,805.68 = 64,811.45 : x
  2. Step 2: Convert to fraction form
    115,799.15/159,805.68 = 64,811.45/x
  3. Step 3: Cross multiply
    115,799.15x = 159,805.68 × 64,811.45
  4. Step 4: Simplify right side
    115,799.15x = 10,357,237,839.04
  5. Step 5: Solve for x
    x = 10,357,237,839.04/115,799.15
  6. Step 6: Final answer
    x = 89,441.40

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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.