Home / 189,415.32-261,391.50-103,376.04

Finding the Fourth Proportional to 189,415.32, 261,391.50 and 103,376.04

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Solution

The fourth proportional to 189,415.32, 261,391.50 and 103,376.04 is: 142,658.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,415.32 : 261,391.50 = 103,376.04 : x
  2. Step 2: Convert to fraction form
    189,415.32/261,391.50 = 103,376.04/x
  3. Step 3: Cross multiply
    189,415.32x = 261,391.50 × 103,376.04
  4. Step 4: Simplify right side
    189,415.32x = 27,021,618,159.66
  5. Step 5: Solve for x
    x = 27,021,618,159.66/189,415.32
  6. Step 6: Final answer
    x = 142,658.04

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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.