Home / 153,727.20-212,174.64-90,119.52

Finding the Fourth Proportional to 153,727.20, 212,174.64 and 90,119.52

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Solution

The fourth proportional to 153,727.20, 212,174.64 and 90,119.52 is: 124,383.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,727.20 : 212,174.64 = 90,119.52 : x
  2. Step 2: Convert to fraction form
    153,727.20/212,174.64 = 90,119.52/x
  3. Step 3: Cross multiply
    153,727.20x = 212,174.64 × 90,119.52
  4. Step 4: Simplify right side
    153,727.20x = 19,121,076,712.97
  5. Step 5: Solve for x
    x = 19,121,076,712.97/153,727.20
  6. Step 6: Final answer
    x = 124,383.17

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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.