Home / 189,709.02-261,824.40-109,135.08

Finding the Fourth Proportional to 189,709.02, 261,824.40 and 109,135.08

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Solution

The fourth proportional to 189,709.02, 261,824.40 and 109,135.08 is: 150,621.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,709.02 : 261,824.40 = 109,135.08 : x
  2. Step 2: Convert to fraction form
    189,709.02/261,824.40 = 109,135.08/x
  3. Step 3: Cross multiply
    189,709.02x = 261,824.40 × 109,135.08
  4. Step 4: Simplify right side
    189,709.02x = 28,574,226,839.95
  5. Step 5: Solve for x
    x = 28,574,226,839.95/189,709.02
  6. Step 6: Final answer
    x = 150,621.34

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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.