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Finding the Fourth Proportional to 85,999,931.40, 120,740,026.20 and 85,999,931.40

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Solution

The fourth proportional to 85,999,931.40, 120,740,026.20 and 85,999,931.40 is: 120,740,026.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,999,931.40 : 120,740,026.20 = 85,999,931.40 : x
  2. Step 2: Convert to fraction form
    85,999,931.40/120,740,026.20 = 85,999,931.40/x
  3. Step 3: Cross multiply
    85,999,931.40x = 120,740,026.20 × 85,999,931.40
  4. Step 4: Simplify right side
    85,999,931.40x = 10,383,633,970,434,204
  5. Step 5: Solve for x
    x = 10,383,633,970,434,204/85,999,931.40
  6. Step 6: Final answer
    x = 120,740,026.20

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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.