Home / 190,515.52-285,753.06-78,207.64

Finding the Fourth Proportional to 190,515.52, 285,753.06 and 78,207.64

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Solution

The fourth proportional to 190,515.52, 285,753.06 and 78,207.64 is: 117,303.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,515.52 : 285,753.06 = 78,207.64 : x
  2. Step 2: Convert to fraction form
    190,515.52/285,753.06 = 78,207.64/x
  3. Step 3: Cross multiply
    190,515.52x = 285,753.06 × 78,207.64
  4. Step 4: Simplify right side
    190,515.52x = 22,348,072,445.38
  5. Step 5: Solve for x
    x = 22,348,072,445.38/190,515.52
  6. Step 6: Final answer
    x = 117,303.16

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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.