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Finding the Fourth Proportional to 140,428.30, 210,205.05 and 101,062.30

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Solution

The fourth proportional to 140,428.30, 210,205.05 and 101,062.30 is: 151,278.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,428.30 : 210,205.05 = 101,062.30 : x
  2. Step 2: Convert to fraction form
    140,428.30/210,205.05 = 101,062.30/x
  3. Step 3: Cross multiply
    140,428.30x = 210,205.05 × 101,062.30
  4. Step 4: Simplify right side
    140,428.30x = 21,243,805,824.62
  5. Step 5: Solve for x
    x = 21,243,805,824.62/140,428.30
  6. Step 6: Final answer
    x = 151,278.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.