Home / 142,458.40-196,594.32-78,794.56

Finding the Fourth Proportional to 142,458.40, 196,594.32 and 78,794.56

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Solution

The fourth proportional to 142,458.40, 196,594.32 and 78,794.56 is: 108,737.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,458.40 : 196,594.32 = 78,794.56 : x
  2. Step 2: Convert to fraction form
    142,458.40/196,594.32 = 78,794.56/x
  3. Step 3: Cross multiply
    142,458.40x = 196,594.32 × 78,794.56
  4. Step 4: Simplify right side
    142,458.40x = 15,490,562,942.90
  5. Step 5: Solve for x
    x = 15,490,562,942.90/142,458.40
  6. Step 6: Final answer
    x = 108,737.45

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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.