Home / 240,106.41-331,409.08-138,142.31

Finding the Fourth Proportional to 240,106.41, 331,409.08 and 138,142.31

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Solution

The fourth proportional to 240,106.41, 331,409.08 and 138,142.31 is: 190,672.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    240,106.41 : 331,409.08 = 138,142.31 : x
  2. Step 2: Convert to fraction form
    240,106.41/331,409.08 = 138,142.31/x
  3. Step 3: Cross multiply
    240,106.41x = 331,409.08 × 138,142.31
  4. Step 4: Simplify right side
    240,106.41x = 45,781,615,866.17
  5. Step 5: Solve for x
    x = 45,781,615,866.17/240,106.41
  6. Step 6: Final answer
    x = 190,672.20

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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.