Home / 142,107.31-213,272.35-99,133.22

Finding the Fourth Proportional to 142,107.31, 213,272.35 and 99,133.22

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Solution

The fourth proportional to 142,107.31, 213,272.35 and 99,133.22 is: 148,777.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,107.31 : 213,272.35 = 99,133.22 : x
  2. Step 2: Convert to fraction form
    142,107.31/213,272.35 = 99,133.22/x
  3. Step 3: Cross multiply
    142,107.31x = 213,272.35 × 99,133.22
  4. Step 4: Simplify right side
    142,107.31x = 21,142,375,077.81
  5. Step 5: Solve for x
    x = 21,142,375,077.81/142,107.31
  6. Step 6: Final answer
    x = 148,777.53

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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.