Home / 145,741.40-201,031.14-100,340.56

Finding the Fourth Proportional to 145,741.40, 201,031.14 and 100,340.56

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Solution

The fourth proportional to 145,741.40, 201,031.14 and 100,340.56 is: 138,406.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,741.40 : 201,031.14 = 100,340.56 : x
  2. Step 2: Convert to fraction form
    145,741.40/201,031.14 = 100,340.56/x
  3. Step 3: Cross multiply
    145,741.40x = 201,031.14 × 100,340.56
  4. Step 4: Simplify right side
    145,741.40x = 20,171,577,227.70
  5. Step 5: Solve for x
    x = 20,171,577,227.70/145,741.40
  6. Step 6: Final answer
    x = 138,406.64

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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.