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Finding the Fourth Proportional to 126,357, 174,230.51 and 103,314.93

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Solution

The fourth proportional to 126,357, 174,230.51 and 103,314.93 is: 142,458.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,357 : 174,230.51 = 103,314.93 : x
  2. Step 2: Convert to fraction form
    126,357/174,230.51 = 103,314.93/x
  3. Step 3: Cross multiply
    126,357x = 174,230.51 × 103,314.93
  4. Step 4: Simplify right side
    126,357x = 18,000,612,427.94
  5. Step 5: Solve for x
    x = 18,000,612,427.94/126,357
  6. Step 6: Final answer
    x = 142,458.37

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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.