Home / 102,916.20-154,308.60-43,721.40

Finding the Fourth Proportional to 102,916.20, 154,308.60 and 43,721.40

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Solution

The fourth proportional to 102,916.20, 154,308.60 and 43,721.40 is: 65,554.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,916.20 : 154,308.60 = 43,721.40 : x
  2. Step 2: Convert to fraction form
    102,916.20/154,308.60 = 43,721.40/x
  3. Step 3: Cross multiply
    102,916.20x = 154,308.60 × 43,721.40
  4. Step 4: Simplify right side
    102,916.20x = 6,746,588,024.04
  5. Step 5: Solve for x
    x = 6,746,588,024.04/102,916.20
  6. Step 6: Final answer
    x = 65,554.19

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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.