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Finding the Fourth Proportional to 212,625,610.80, 318,686,473.80 and 89,803,690.80

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Solution

The fourth proportional to 212,625,610.80, 318,686,473.80 and 89,803,690.80 is: 134,599,126.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,625,610.80 : 318,686,473.80 = 89,803,690.80 : x
  2. Step 2: Convert to fraction form
    212,625,610.80/318,686,473.80 = 89,803,690.80/x
  3. Step 3: Cross multiply
    212,625,610.80x = 318,686,473.80 × 89,803,690.80
  4. Step 4: Simplify right side
    212,625,610.80x = 28,619,221,555,277,500
  5. Step 5: Solve for x
    x = 28,619,221,555,277,500/212,625,610.80
  6. Step 6: Final answer
    x = 134,599,126.83

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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.