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Finding the Fourth Proportional to 86,000,001.90, 120,740,124.90 and 86,000,001.90

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Solution

The fourth proportional to 86,000,001.90, 120,740,124.90 and 86,000,001.90 is: 120,740,124.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,000,001.90 : 120,740,124.90 = 86,000,001.90 : x
  2. Step 2: Convert to fraction form
    86,000,001.90/120,740,124.90 = 86,000,001.90/x
  3. Step 3: Cross multiply
    86,000,001.90x = 120,740,124.90 × 86,000,001.90
  4. Step 4: Simplify right side
    86,000,001.90x = 10,383,650,970,806,238
  5. Step 5: Solve for x
    x = 10,383,650,970,806,238/86,000,001.90
  6. Step 6: Final answer
    x = 120,740,124.90

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1.5x scale

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.