Home / 155,905.54-215,144.40-98,575.72

Finding the Fourth Proportional to 155,905.54, 215,144.40 and 98,575.72

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Solution

The fourth proportional to 155,905.54, 215,144.40 and 98,575.72 is: 136,031.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,905.54 : 215,144.40 = 98,575.72 : x
  2. Step 2: Convert to fraction form
    155,905.54/215,144.40 = 98,575.72/x
  3. Step 3: Cross multiply
    155,905.54x = 215,144.40 × 98,575.72
  4. Step 4: Simplify right side
    155,905.54x = 21,208,013,596.11
  5. Step 5: Solve for x
    x = 21,208,013,596.11/155,905.54
  6. Step 6: Final answer
    x = 136,031.18

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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.