Home / 98,657.12-135,960.83-71,387.06

Finding the Fourth Proportional to 98,657.12, 135,960.83 and 71,387.06

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Solution

The fourth proportional to 98,657.12, 135,960.83 and 71,387.06 is: 98,379.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,657.12 : 135,960.83 = 71,387.06 : x
  2. Step 2: Convert to fraction form
    98,657.12/135,960.83 = 71,387.06/x
  3. Step 3: Cross multiply
    98,657.12x = 135,960.83 × 71,387.06
  4. Step 4: Simplify right side
    98,657.12x = 9,705,843,159.82
  5. Step 5: Solve for x
    x = 9,705,843,159.82/98,657.12
  6. Step 6: Final answer
    x = 98,379.55

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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.