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Finding the Fourth Proportional to 172,710.40, 258,547.20 and 102,553.60

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Solution

The fourth proportional to 172,710.40, 258,547.20 and 102,553.60 is: 153,522.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,710.40 : 258,547.20 = 102,553.60 : x
  2. Step 2: Convert to fraction form
    172,710.40/258,547.20 = 102,553.60/x
  3. Step 3: Cross multiply
    172,710.40x = 258,547.20 × 102,553.60
  4. Step 4: Simplify right side
    172,710.40x = 26,514,946,129.92
  5. Step 5: Solve for x
    x = 26,514,946,129.92/172,710.40
  6. Step 6: Final answer
    x = 153,522.58

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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.