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Finding the Fourth Proportional to 103,394.70, 142,697.88 and 63,099.90

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Solution

The fourth proportional to 103,394.70, 142,697.88 and 63,099.90 is: 87,085.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,394.70 : 142,697.88 = 63,099.90 : x
  2. Step 2: Convert to fraction form
    103,394.70/142,697.88 = 63,099.90/x
  3. Step 3: Cross multiply
    103,394.70x = 142,697.88 × 63,099.90
  4. Step 4: Simplify right side
    103,394.70x = 9,004,221,958.21
  5. Step 5: Solve for x
    x = 9,004,221,958.21/103,394.70
  6. Step 6: Final answer
    x = 87,085.91

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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.