Home / 145,743.40-201,033.90-100,342.56

Finding the Fourth Proportional to 145,743.40, 201,033.90 and 100,342.56

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Solution

The fourth proportional to 145,743.40, 201,033.90 and 100,342.56 is: 138,409.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,743.40 : 201,033.90 = 100,342.56 : x
  2. Step 2: Convert to fraction form
    145,743.40/201,033.90 = 100,342.56/x
  3. Step 3: Cross multiply
    145,743.40x = 201,033.90 × 100,342.56
  4. Step 4: Simplify right side
    145,743.40x = 20,172,256,172.78
  5. Step 5: Solve for x
    x = 20,172,256,172.78/145,743.40
  6. Step 6: Final answer
    x = 138,409.40

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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.