Home / 145,023.48-200,131.56-81,361.13

Finding the Fourth Proportional to 145,023.48, 200,131.56 and 81,361.13

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Solution

The fourth proportional to 145,023.48, 200,131.56 and 81,361.13 is: 112,277.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,023.48 : 200,131.56 = 81,361.13 : x
  2. Step 2: Convert to fraction form
    145,023.48/200,131.56 = 81,361.13/x
  3. Step 3: Cross multiply
    145,023.48x = 200,131.56 × 81,361.13
  4. Step 4: Simplify right side
    145,023.48x = 16,282,928,869.61
  5. Step 5: Solve for x
    x = 16,282,928,869.61/145,023.48
  6. Step 6: Final answer
    x = 112,277.88

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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.