Home / 181,970.72-251,138.28-109,397.10

Finding the Fourth Proportional to 181,970.72, 251,138.28 and 109,397.10

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Solution

The fourth proportional to 181,970.72, 251,138.28 and 109,397.10 is: 150,979.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,970.72 : 251,138.28 = 109,397.10 : x
  2. Step 2: Convert to fraction form
    181,970.72/251,138.28 = 109,397.10/x
  3. Step 3: Cross multiply
    181,970.72x = 251,138.28 × 109,397.10
  4. Step 4: Simplify right side
    181,970.72x = 27,473,799,530.99
  5. Step 5: Solve for x
    x = 27,473,799,530.99/181,970.72
  6. Step 6: Final answer
    x = 150,979.23

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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.