Home / 142,531.20-213,710.40-71,371.08

Finding the Fourth Proportional to 142,531.20, 213,710.40 and 71,371.08

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Solution

The fourth proportional to 142,531.20, 213,710.40 and 71,371.08 is: 107,013.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,531.20 : 213,710.40 = 71,371.08 : x
  2. Step 2: Convert to fraction form
    142,531.20/213,710.40 = 71,371.08/x
  3. Step 3: Cross multiply
    142,531.20x = 213,710.40 × 71,371.08
  4. Step 4: Simplify right side
    142,531.20x = 15,252,742,055.23
  5. Step 5: Solve for x
    x = 15,252,742,055.23/142,531.20
  6. Step 6: Final answer
    x = 107,013.36

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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.