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Finding the Fourth Proportional to 98,981,150.40, 138,860,588.70 and 98,981,150.40

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Solution

The fourth proportional to 98,981,150.40, 138,860,588.70 and 98,981,150.40 is: 138,860,588.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,981,150.40 : 138,860,588.70 = 98,981,150.40 : x
  2. Step 2: Convert to fraction form
    98,981,150.40/138,860,588.70 = 98,981,150.40/x
  3. Step 3: Cross multiply
    98,981,150.40x = 138,860,588.70 × 98,981,150.40
  4. Step 4: Simplify right side
    98,981,150.40x = 13,744,580,814,747,240
  5. Step 5: Solve for x
    x = 13,744,580,814,747,240/98,981,150.40
  6. Step 6: Final answer
    x = 138,860,588.70

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.