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Finding the Fourth Proportional to 102,558.20, 153,707.70 and 49,854.20

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Solution

The fourth proportional to 102,558.20, 153,707.70 and 49,854.20 is: 74,718.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,558.20 : 153,707.70 = 49,854.20 : x
  2. Step 2: Convert to fraction form
    102,558.20/153,707.70 = 49,854.20/x
  3. Step 3: Cross multiply
    102,558.20x = 153,707.70 × 49,854.20
  4. Step 4: Simplify right side
    102,558.20x = 7,662,974,417.34
  5. Step 5: Solve for x
    x = 7,662,974,417.34/102,558.20
  6. Step 6: Final answer
    x = 74,718.30

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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.