Home / 115,854.83-159,842.49-64,860.05

Finding the Fourth Proportional to 115,854.83, 159,842.49 and 64,860.05

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Solution

The fourth proportional to 115,854.83, 159,842.49 and 64,860.05 is: 89,486.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,854.83 : 159,842.49 = 64,860.05 : x
  2. Step 2: Convert to fraction form
    115,854.83/159,842.49 = 64,860.05/x
  3. Step 3: Cross multiply
    115,854.83x = 159,842.49 × 64,860.05
  4. Step 4: Simplify right side
    115,854.83x = 10,367,391,893.52
  5. Step 5: Solve for x
    x = 10,367,391,893.52/115,854.83
  6. Step 6: Final answer
    x = 89,486.06

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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.