Home / 131,112.33-180,888.35-77,370.45

Finding the Fourth Proportional to 131,112.33, 180,888.35 and 77,370.45

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Solution

The fourth proportional to 131,112.33, 180,888.35 and 77,370.45 is: 106,743.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,112.33 : 180,888.35 = 77,370.45 : x
  2. Step 2: Convert to fraction form
    131,112.33/180,888.35 = 77,370.45/x
  3. Step 3: Cross multiply
    131,112.33x = 180,888.35 × 77,370.45
  4. Step 4: Simplify right side
    131,112.33x = 13,995,413,039.26
  5. Step 5: Solve for x
    x = 13,995,413,039.26/131,112.33
  6. Step 6: Final answer
    x = 106,743.68

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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.