Home / 145,742.90-201,033.21-100,342.06

Finding the Fourth Proportional to 145,742.90, 201,033.21 and 100,342.06

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Solution

The fourth proportional to 145,742.90, 201,033.21 and 100,342.06 is: 138,408.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,742.90 : 201,033.21 = 100,342.06 : x
  2. Step 2: Convert to fraction form
    145,742.90/201,033.21 = 100,342.06/x
  3. Step 3: Cross multiply
    145,742.90x = 201,033.21 × 100,342.06
  4. Step 4: Simplify right side
    145,742.90x = 20,172,086,419.81
  5. Step 5: Solve for x
    x = 20,172,086,419.81/145,742.90
  6. Step 6: Final answer
    x = 138,408.71

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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.