Home / 219,739.12-329,621.80-61,981.04

Finding the Fourth Proportional to 219,739.12, 329,621.80 and 61,981.04

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Solution

The fourth proportional to 219,739.12, 329,621.80 and 61,981.04 is: 92,975.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,739.12 : 329,621.80 = 61,981.04 : x
  2. Step 2: Convert to fraction form
    219,739.12/329,621.80 = 61,981.04/x
  3. Step 3: Cross multiply
    219,739.12x = 329,621.80 × 61,981.04
  4. Step 4: Simplify right side
    219,739.12x = 20,430,301,970.67
  5. Step 5: Solve for x
    x = 20,430,301,970.67/219,739.12
  6. Step 6: Final answer
    x = 92,975.26

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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.