Home / 158,564.76-218,819.43-86,943.30

Finding the Fourth Proportional to 158,564.76, 218,819.43 and 86,943.30

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Solution

The fourth proportional to 158,564.76, 218,819.43 and 86,943.30 is: 119,981.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,564.76 : 218,819.43 = 86,943.30 : x
  2. Step 2: Convert to fraction form
    158,564.76/218,819.43 = 86,943.30/x
  3. Step 3: Cross multiply
    158,564.76x = 218,819.43 × 86,943.30
  4. Step 4: Simplify right side
    158,564.76x = 19,024,883,348.32
  5. Step 5: Solve for x
    x = 19,024,883,348.32/158,564.76
  6. Step 6: Final answer
    x = 119,981.79

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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.