Home / 134,142.40-201,213.60-86,903.20

Finding the Fourth Proportional to 134,142.40, 201,213.60 and 86,903.20

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Solution

The fourth proportional to 134,142.40, 201,213.60 and 86,903.20 is: 130,354.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,142.40 : 201,213.60 = 86,903.20 : x
  2. Step 2: Convert to fraction form
    134,142.40/201,213.60 = 86,903.20/x
  3. Step 3: Cross multiply
    134,142.40x = 201,213.60 × 86,903.20
  4. Step 4: Simplify right side
    134,142.40x = 17,486,105,723.52
  5. Step 5: Solve for x
    x = 17,486,105,723.52/134,142.40
  6. Step 6: Final answer
    x = 130,354.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.