Home / 115,203.59-158,981.68-64,219.56

Finding the Fourth Proportional to 115,203.59, 158,981.68 and 64,219.56

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Solution

The fourth proportional to 115,203.59, 158,981.68 and 64,219.56 is: 88,623.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,203.59 : 158,981.68 = 64,219.56 : x
  2. Step 2: Convert to fraction form
    115,203.59/158,981.68 = 64,219.56/x
  3. Step 3: Cross multiply
    115,203.59x = 158,981.68 × 64,219.56
  4. Step 4: Simplify right side
    115,203.59x = 10,209,733,537.66
  5. Step 5: Solve for x
    x = 10,209,733,537.66/115,203.59
  6. Step 6: Final answer
    x = 88,623.40

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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.