Home / 138,290.06-190,841.64-77,848.94

Finding the Fourth Proportional to 138,290.06, 190,841.64 and 77,848.94

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Solution

The fourth proportional to 138,290.06, 190,841.64 and 77,848.94 is: 107,432.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,290.06 : 190,841.64 = 77,848.94 : x
  2. Step 2: Convert to fraction form
    138,290.06/190,841.64 = 77,848.94/x
  3. Step 3: Cross multiply
    138,290.06x = 190,841.64 × 77,848.94
  4. Step 4: Simplify right side
    138,290.06x = 14,856,819,381.86
  5. Step 5: Solve for x
    x = 14,856,819,381.86/138,290.06
  6. Step 6: Final answer
    x = 107,432.30

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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.