Home / 137,686.75-190,010.60-77,261.76

Finding the Fourth Proportional to 137,686.75, 190,010.60 and 77,261.76

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Solution

The fourth proportional to 137,686.75, 190,010.60 and 77,261.76 is: 106,622.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,686.75 : 190,010.60 = 77,261.76 : x
  2. Step 2: Convert to fraction form
    137,686.75/190,010.60 = 77,261.76/x
  3. Step 3: Cross multiply
    137,686.75x = 190,010.60 × 77,261.76
  4. Step 4: Simplify right side
    137,686.75x = 14,680,553,374.66
  5. Step 5: Solve for x
    x = 14,680,553,374.66/137,686.75
  6. Step 6: Final answer
    x = 106,622.85

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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.