Home / 126,721.76-190,124.82-42,490.22

Finding the Fourth Proportional to 126,721.76, 190,124.82 and 42,490.22

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Solution

The fourth proportional to 126,721.76, 190,124.82 and 42,490.22 is: 63,749.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,721.76 : 190,124.82 = 42,490.22 : x
  2. Step 2: Convert to fraction form
    126,721.76/190,124.82 = 42,490.22/x
  3. Step 3: Cross multiply
    126,721.76x = 190,124.82 × 42,490.22
  4. Step 4: Simplify right side
    126,721.76x = 8,078,445,429.26
  5. Step 5: Solve for x
    x = 8,078,445,429.26/126,721.76
  6. Step 6: Final answer
    x = 63,749.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.