Home / 138,749.41-191,314.57-102,503.30

Finding the Fourth Proportional to 138,749.41, 191,314.57 and 102,503.30

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Solution

The fourth proportional to 138,749.41, 191,314.57 and 102,503.30 is: 141,336.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,749.41 : 191,314.57 = 102,503.30 : x
  2. Step 2: Convert to fraction form
    138,749.41/191,314.57 = 102,503.30/x
  3. Step 3: Cross multiply
    138,749.41x = 191,314.57 × 102,503.30
  4. Step 4: Simplify right side
    138,749.41x = 19,610,374,250.56
  5. Step 5: Solve for x
    x = 19,610,374,250.56/138,749.41
  6. Step 6: Final answer
    x = 141,336.64

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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.