Home / 138,110.24-190,597.92-81,521.60

Finding the Fourth Proportional to 138,110.24, 190,597.92 and 81,521.60

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Solution

The fourth proportional to 138,110.24, 190,597.92 and 81,521.60 is: 112,503.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,110.24 : 190,597.92 = 81,521.60 : x
  2. Step 2: Convert to fraction form
    138,110.24/190,597.92 = 81,521.60/x
  3. Step 3: Cross multiply
    138,110.24x = 190,597.92 × 81,521.60
  4. Step 4: Simplify right side
    138,110.24x = 15,537,847,395.07
  5. Step 5: Solve for x
    x = 15,537,847,395.07/138,110.24
  6. Step 6: Final answer
    x = 112,503.22

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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.