Home / 142,205.06-196,226.19-78,539.06

Finding the Fourth Proportional to 142,205.06, 196,226.19 and 78,539.06

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Solution

The fourth proportional to 142,205.06, 196,226.19 and 78,539.06 is: 108,374.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,205.06 : 196,226.19 = 78,539.06 : x
  2. Step 2: Convert to fraction form
    142,205.06/196,226.19 = 78,539.06/x
  3. Step 3: Cross multiply
    142,205.06x = 196,226.19 × 78,539.06
  4. Step 4: Simplify right side
    142,205.06x = 15,411,420,509.98
  5. Step 5: Solve for x
    x = 15,411,420,509.98/142,205.06
  6. Step 6: Final answer
    x = 108,374.63

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1.5x scale

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.