Home / 98,809.40-148,218.20-28,688.72

Finding the Fourth Proportional to 98,809.40, 148,218.20 and 28,688.72

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Solution

The fourth proportional to 98,809.40, 148,218.20 and 28,688.72 is: 43,034.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,809.40 : 148,218.20 = 28,688.72 : x
  2. Step 2: Convert to fraction form
    98,809.40/148,218.20 = 28,688.72/x
  3. Step 3: Cross multiply
    98,809.40x = 148,218.20 × 28,688.72
  4. Step 4: Simplify right side
    98,809.40x = 4,252,189,554.17
  5. Step 5: Solve for x
    x = 4,252,189,554.17/98,809.40
  6. Step 6: Final answer
    x = 43,034.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.