Home / 190,335.02-285,502.12-78,015.35

Finding the Fourth Proportional to 190,335.02, 285,502.12 and 78,015.35

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Solution

The fourth proportional to 190,335.02, 285,502.12 and 78,015.35 is: 117,022.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,335.02 : 285,502.12 = 78,015.35 : x
  2. Step 2: Convert to fraction form
    190,335.02/285,502.12 = 78,015.35/x
  3. Step 3: Cross multiply
    190,335.02x = 285,502.12 × 78,015.35
  4. Step 4: Simplify right side
    190,335.02x = 22,273,548,336.26
  5. Step 5: Solve for x
    x = 22,273,548,336.26/190,335.02
  6. Step 6: Final answer
    x = 117,022.86

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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.