Home / 138,851.64-191,622.24-81,493.45

Finding the Fourth Proportional to 138,851.64, 191,622.24 and 81,493.45

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Solution

The fourth proportional to 138,851.64, 191,622.24 and 81,493.45 is: 112,465.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,851.64 : 191,622.24 = 81,493.45 : x
  2. Step 2: Convert to fraction form
    138,851.64/191,622.24 = 81,493.45/x
  3. Step 3: Cross multiply
    138,851.64x = 191,622.24 × 81,493.45
  4. Step 4: Simplify right side
    138,851.64x = 15,615,956,955.27
  5. Step 5: Solve for x
    x = 15,615,956,955.27/138,851.64
  6. Step 6: Final answer
    x = 112,465.05

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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.