Home / 142,293.18-213,393.93-79,143.42

Finding the Fourth Proportional to 142,293.18, 213,393.93 and 79,143.42

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Solution

The fourth proportional to 142,293.18, 213,393.93 and 79,143.42 is: 118,689.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,293.18 : 213,393.93 = 79,143.42 : x
  2. Step 2: Convert to fraction form
    142,293.18/213,393.93 = 79,143.42/x
  3. Step 3: Cross multiply
    142,293.18x = 213,393.93 × 79,143.42
  4. Step 4: Simplify right side
    142,293.18x = 16,888,725,427.44
  5. Step 5: Solve for x
    x = 16,888,725,427.44/142,293.18
  6. Step 6: Final answer
    x = 118,689.63

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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.