Home / 145,851.88-201,274.40-81,320.36

Finding the Fourth Proportional to 145,851.88, 201,274.40 and 81,320.36

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Solution

The fourth proportional to 145,851.88, 201,274.40 and 81,320.36 is: 112,221.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,851.88 : 201,274.40 = 81,320.36 : x
  2. Step 2: Convert to fraction form
    145,851.88/201,274.40 = 81,320.36/x
  3. Step 3: Cross multiply
    145,851.88x = 201,274.40 × 81,320.36
  4. Step 4: Simplify right side
    145,851.88x = 16,367,706,666.78
  5. Step 5: Solve for x
    x = 16,367,706,666.78/145,851.88
  6. Step 6: Final answer
    x = 112,221.43

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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.