Home / 138,204.94-190,726.50-77,777.74

Finding the Fourth Proportional to 138,204.94, 190,726.50 and 77,777.74

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Solution

The fourth proportional to 138,204.94, 190,726.50 and 77,777.74 is: 107,335.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,204.94 : 190,726.50 = 77,777.74 : x
  2. Step 2: Convert to fraction form
    138,204.94/190,726.50 = 77,777.74/x
  3. Step 3: Cross multiply
    138,204.94x = 190,726.50 × 77,777.74
  4. Step 4: Simplify right side
    138,204.94x = 14,834,276,128.11
  5. Step 5: Solve for x
    x = 14,834,276,128.11/138,204.94
  6. Step 6: Final answer
    x = 107,335.35

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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.