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Finding the Fourth Proportional to 159,662,468.52, 239,492,697.77 and 85,920,984.12

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Solution

The fourth proportional to 159,662,468.52, 239,492,697.77 and 85,920,984.12 is: 128,880,935.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,662,468.52 : 239,492,697.77 = 85,920,984.12 : x
  2. Step 2: Convert to fraction form
    159,662,468.52/239,492,697.77 = 85,920,984.12/x
  3. Step 3: Cross multiply
    159,662,468.52x = 239,492,697.77 × 85,920,984.12
  4. Step 4: Simplify right side
    159,662,468.52x = 20,577,448,282,560,900
  5. Step 5: Solve for x
    x = 20,577,448,282,560,900/159,662,468.52
  6. Step 6: Final answer
    x = 128,880,935.35

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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.