Home / 101,122.09-140,138.28-99,695.07

Finding the Fourth Proportional to 101,122.09, 140,138.28 and 99,695.07

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Solution

The fourth proportional to 101,122.09, 140,138.28 and 99,695.07 is: 138,160.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,122.09 : 140,138.28 = 99,695.07 : x
  2. Step 2: Convert to fraction form
    101,122.09/140,138.28 = 99,695.07/x
  3. Step 3: Cross multiply
    101,122.09x = 140,138.28 × 99,695.07
  4. Step 4: Simplify right side
    101,122.09x = 13,971,095,634.28
  5. Step 5: Solve for x
    x = 13,971,095,634.28/101,122.09
  6. Step 6: Final answer
    x = 138,160.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.