Home / 115,515.86-159,415.29-64,530.74

Finding the Fourth Proportional to 115,515.86, 159,415.29 and 64,530.74

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Solution

The fourth proportional to 115,515.86, 159,415.29 and 64,530.74 is: 89,054.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,515.86 : 159,415.29 = 64,530.74 : x
  2. Step 2: Convert to fraction form
    115,515.86/159,415.29 = 64,530.74/x
  3. Step 3: Cross multiply
    115,515.86x = 159,415.29 × 64,530.74
  4. Step 4: Simplify right side
    115,515.86x = 10,287,187,029.55
  5. Step 5: Solve for x
    x = 10,287,187,029.55/115,515.86
  6. Step 6: Final answer
    x = 89,054.33

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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.