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Finding the Fourth Proportional to 172,172.68, 237,612.58 and 100,575.68

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Solution

The fourth proportional to 172,172.68, 237,612.58 and 100,575.68 is: 138,802.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,172.68 : 237,612.58 = 100,575.68 : x
  2. Step 2: Convert to fraction form
    172,172.68/237,612.58 = 100,575.68/x
  3. Step 3: Cross multiply
    172,172.68x = 237,612.58 × 100,575.68
  4. Step 4: Simplify right side
    172,172.68x = 23,898,046,810.05
  5. Step 5: Solve for x
    x = 23,898,046,810.05/172,172.68
  6. Step 6: Final answer
    x = 138,802.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.