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Finding the Fourth Proportional to 169,506.78, 253,945.58 and 121,376.04

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Solution

The fourth proportional to 169,506.78, 253,945.58 and 121,376.04 is: 181,838.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,506.78 : 253,945.58 = 121,376.04 : x
  2. Step 2: Convert to fraction form
    169,506.78/253,945.58 = 121,376.04/x
  3. Step 3: Cross multiply
    169,506.78x = 253,945.58 × 121,376.04
  4. Step 4: Simplify right side
    169,506.78x = 30,822,908,875.90
  5. Step 5: Solve for x
    x = 30,822,908,875.90/169,506.78
  6. Step 6: Final answer
    x = 181,838.80

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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.