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Finding the Fourth Proportional to 170,017.52, 254,916.93 and 81,269.06

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Solution

The fourth proportional to 170,017.52, 254,916.93 and 81,269.06 is: 121,851.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,017.52 : 254,916.93 = 81,269.06 : x
  2. Step 2: Convert to fraction form
    170,017.52/254,916.93 = 81,269.06/x
  3. Step 3: Cross multiply
    170,017.52x = 254,916.93 × 81,269.06
  4. Step 4: Simplify right side
    170,017.52x = 20,716,859,279.19
  5. Step 5: Solve for x
    x = 20,716,859,279.19/170,017.52
  6. Step 6: Final answer
    x = 121,851.32

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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.