Home / 138,077.67-190,554.08-77,667.33

Finding the Fourth Proportional to 138,077.67, 190,554.08 and 77,667.33

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Solution

The fourth proportional to 138,077.67, 190,554.08 and 77,667.33 is: 107,184.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,077.67 : 190,554.08 = 77,667.33 : x
  2. Step 2: Convert to fraction form
    138,077.67/190,554.08 = 77,667.33/x
  3. Step 3: Cross multiply
    138,077.67x = 190,554.08 × 77,667.33
  4. Step 4: Simplify right side
    138,077.67x = 14,799,826,225.87
  5. Step 5: Solve for x
    x = 14,799,826,225.87/138,077.67
  6. Step 6: Final answer
    x = 107,184.79

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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.