Home / 101,523.16-140,036.97-81,428.27

Finding the Fourth Proportional to 101,523.16, 140,036.97 and 81,428.27

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Solution

The fourth proportional to 101,523.16, 140,036.97 and 81,428.27 is: 112,318.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,523.16 : 140,036.97 = 81,428.27 : x
  2. Step 2: Convert to fraction form
    101,523.16/140,036.97 = 81,428.27/x
  3. Step 3: Cross multiply
    101,523.16x = 140,036.97 × 81,428.27
  4. Step 4: Simplify right side
    101,523.16x = 11,402,968,203.14
  5. Step 5: Solve for x
    x = 11,402,968,203.14/101,523.16
  6. Step 6: Final answer
    x = 112,318.89

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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.