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Finding the Fourth Proportional to 172,300.59, 237,739.95 and 100,666.77

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Solution

The fourth proportional to 172,300.59, 237,739.95 and 100,666.77 is: 138,899.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,300.59 : 237,739.95 = 100,666.77 : x
  2. Step 2: Convert to fraction form
    172,300.59/237,739.95 = 100,666.77/x
  3. Step 3: Cross multiply
    172,300.59x = 237,739.95 × 100,666.77
  4. Step 4: Simplify right side
    172,300.59x = 23,932,512,866.46
  5. Step 5: Solve for x
    x = 23,932,512,866.46/172,300.59
  6. Step 6: Final answer
    x = 138,899.77

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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.