Home / 138,263.45-190,807.19-77,836.31

Finding the Fourth Proportional to 138,263.45, 190,807.19 and 77,836.31

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Solution

The fourth proportional to 138,263.45, 190,807.19 and 77,836.31 is: 107,416.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,263.45 : 190,807.19 = 77,836.31 : x
  2. Step 2: Convert to fraction form
    138,263.45/190,807.19 = 77,836.31/x
  3. Step 3: Cross multiply
    138,263.45x = 190,807.19 × 77,836.31
  4. Step 4: Simplify right side
    138,263.45x = 14,851,726,247.85
  5. Step 5: Solve for x
    x = 14,851,726,247.85/138,263.45
  6. Step 6: Final answer
    x = 107,416.14

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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.