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Finding the Fourth Proportional to 85,999,931.03, 120,740,025.68 and 85,999,931.03

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Solution

The fourth proportional to 85,999,931.03, 120,740,025.68 and 85,999,931.03 is: 120,740,025.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,999,931.03 : 120,740,025.68 = 85,999,931.03 : x
  2. Step 2: Convert to fraction form
    85,999,931.03/120,740,025.68 = 85,999,931.03/x
  3. Step 3: Cross multiply
    85,999,931.03x = 120,740,025.68 × 85,999,931.03
  4. Step 4: Simplify right side
    85,999,931.03x = 10,383,633,880,006,730
  5. Step 5: Solve for x
    x = 10,383,633,880,006,730/85,999,931.03
  6. Step 6: Final answer
    x = 120,740,025.68

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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.