Home / 197,111.20-295,666.80-78,867.40

Finding the Fourth Proportional to 197,111.20, 295,666.80 and 78,867.40

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Solution

The fourth proportional to 197,111.20, 295,666.80 and 78,867.40 is: 118,301.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    197,111.20 : 295,666.80 = 78,867.40 : x
  2. Step 2: Convert to fraction form
    197,111.20/295,666.80 = 78,867.40/x
  3. Step 3: Cross multiply
    197,111.20x = 295,666.80 × 78,867.40
  4. Step 4: Simplify right side
    197,111.20x = 23,318,471,782.32
  5. Step 5: Solve for x
    x = 23,318,471,782.32/197,111.20
  6. Step 6: Final answer
    x = 118,301.10

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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.