Home / 142,352.02-196,438.11-78,686.02

Finding the Fourth Proportional to 142,352.02, 196,438.11 and 78,686.02

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Solution

The fourth proportional to 142,352.02, 196,438.11 and 78,686.02 is: 108,582.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,352.02 : 196,438.11 = 78,686.02 : x
  2. Step 2: Convert to fraction form
    142,352.02/196,438.11 = 78,686.02/x
  3. Step 3: Cross multiply
    142,352.02x = 196,438.11 × 78,686.02
  4. Step 4: Simplify right side
    142,352.02x = 15,456,933,052.22
  5. Step 5: Solve for x
    x = 15,456,933,052.22/142,352.02
  6. Step 6: Final answer
    x = 108,582.46

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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.