Home / 140,721.40-194,189.70-77,058.10

Finding the Fourth Proportional to 140,721.40, 194,189.70 and 77,058.10

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Solution

The fourth proportional to 140,721.40, 194,189.70 and 77,058.10 is: 106,336.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,721.40 : 194,189.70 = 77,058.10 : x
  2. Step 2: Convert to fraction form
    140,721.40/194,189.70 = 77,058.10/x
  3. Step 3: Cross multiply
    140,721.40x = 194,189.70 × 77,058.10
  4. Step 4: Simplify right side
    140,721.40x = 14,963,889,321.57
  5. Step 5: Solve for x
    x = 14,963,889,321.57/140,721.40
  6. Step 6: Final answer
    x = 106,336.98

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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.