Home / 145,743.90-201,034.59-100,343.06

Finding the Fourth Proportional to 145,743.90, 201,034.59 and 100,343.06

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Solution

The fourth proportional to 145,743.90, 201,034.59 and 100,343.06 is: 138,410.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,743.90 : 201,034.59 = 100,343.06 : x
  2. Step 2: Convert to fraction form
    145,743.90/201,034.59 = 100,343.06/x
  3. Step 3: Cross multiply
    145,743.90x = 201,034.59 × 100,343.06
  4. Step 4: Simplify right side
    145,743.90x = 20,172,425,926.45
  5. Step 5: Solve for x
    x = 20,172,425,926.45/145,743.90
  6. Step 6: Final answer
    x = 138,410.09

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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.