Home / 138,240.83-190,803.45-90,466.49

Finding the Fourth Proportional to 138,240.83, 190,803.45 and 90,466.49

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Solution

The fourth proportional to 138,240.83, 190,803.45 and 90,466.49 is: 124,864.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,240.83 : 190,803.45 = 90,466.49 : x
  2. Step 2: Convert to fraction form
    138,240.83/190,803.45 = 90,466.49/x
  3. Step 3: Cross multiply
    138,240.83x = 190,803.45 × 90,466.49
  4. Step 4: Simplify right side
    138,240.83x = 17,261,319,104.57
  5. Step 5: Solve for x
    x = 17,261,319,104.57/138,240.83
  6. Step 6: Final answer
    x = 124,864.12

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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.