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Finding the Fourth Proportional to 101,138.10, 141,330.90 and 101,138.10

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Solution

The fourth proportional to 101,138.10, 141,330.90 and 101,138.10 is: 141,330.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,138.10 : 141,330.90 = 101,138.10 : x
  2. Step 2: Convert to fraction form
    101,138.10/141,330.90 = 101,138.10/x
  3. Step 3: Cross multiply
    101,138.10x = 141,330.90 × 101,138.10
  4. Step 4: Simplify right side
    101,138.10x = 14,293,938,697.29
  5. Step 5: Solve for x
    x = 14,293,938,697.29/101,138.10
  6. Step 6: Final answer
    x = 141,330.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.