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Finding the Fourth Proportional to 101,486.40, 152,063.40 and 54,051.15

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Solution

The fourth proportional to 101,486.40, 152,063.40 and 54,051.15 is: 80,988.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,486.40 : 152,063.40 = 54,051.15 : x
  2. Step 2: Convert to fraction form
    101,486.40/152,063.40 = 54,051.15/x
  3. Step 3: Cross multiply
    101,486.40x = 152,063.40 × 54,051.15
  4. Step 4: Simplify right side
    101,486.40x = 8,219,201,642.91
  5. Step 5: Solve for x
    x = 8,219,201,642.91/101,486.40
  6. Step 6: Final answer
    x = 80,988.21

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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.