Home / 138,279.11-190,810.57-77,848.66

Finding the Fourth Proportional to 138,279.11, 190,810.57 and 77,848.66

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Solution

The fourth proportional to 138,279.11, 190,810.57 and 77,848.66 is: 107,422.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,279.11 : 190,810.57 = 77,848.66 : x
  2. Step 2: Convert to fraction form
    138,279.11/190,810.57 = 77,848.66/x
  3. Step 3: Cross multiply
    138,279.11x = 190,810.57 × 77,848.66
  4. Step 4: Simplify right side
    138,279.11x = 14,854,345,845.04
  5. Step 5: Solve for x
    x = 14,854,345,845.04/138,279.11
  6. Step 6: Final answer
    x = 107,422.92

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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.