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Finding the Fourth Proportional to 172,300.65, 237,740.05 and 100,666.84

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Solution

The fourth proportional to 172,300.65, 237,740.05 and 100,666.84 is: 138,899.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,300.65 : 237,740.05 = 100,666.84 : x
  2. Step 2: Convert to fraction form
    172,300.65/237,740.05 = 100,666.84/x
  3. Step 3: Cross multiply
    172,300.65x = 237,740.05 × 100,666.84
  4. Step 4: Simplify right side
    172,300.65x = 23,932,539,574.94
  5. Step 5: Solve for x
    x = 23,932,539,574.94/172,300.65
  6. Step 6: Final answer
    x = 138,899.88

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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.