Home / 98,688-136,189.44-53,976.96

Finding the Fourth Proportional to 98,688, 136,189.44 and 53,976.96

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Solution

The fourth proportional to 98,688, 136,189.44 and 53,976.96 is: 74,488.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,688 : 136,189.44 = 53,976.96 : x
  2. Step 2: Convert to fraction form
    98,688/136,189.44 = 53,976.96/x
  3. Step 3: Cross multiply
    98,688x = 136,189.44 × 53,976.96
  4. Step 4: Simplify right side
    98,688x = 7,351,091,955.30
  5. Step 5: Solve for x
    x = 7,351,091,955.30/98,688
  6. Step 6: Final answer
    x = 74,488.20

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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.