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Finding the Fourth Proportional to 165,300.90, 247,987.80 and 52,986.30

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Solution

The fourth proportional to 165,300.90, 247,987.80 and 52,986.30 is: 79,491.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,300.90 : 247,987.80 = 52,986.30 : x
  2. Step 2: Convert to fraction form
    165,300.90/247,987.80 = 52,986.30/x
  3. Step 3: Cross multiply
    165,300.90x = 247,987.80 × 52,986.30
  4. Step 4: Simplify right side
    165,300.90x = 13,139,955,967.14
  5. Step 5: Solve for x
    x = 13,139,955,967.14/165,300.90
  6. Step 6: Final answer
    x = 79,491.13

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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.