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Finding the Fourth Proportional to 121,337,985.60, 182,006,978.40 and 115,669,281.60

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Solution

The fourth proportional to 121,337,985.60, 182,006,978.40 and 115,669,281.60 is: 173,503,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,337,985.60 : 182,006,978.40 = 115,669,281.60 : x
  2. Step 2: Convert to fraction form
    121,337,985.60/182,006,978.40 = 115,669,281.60/x
  3. Step 3: Cross multiply
    121,337,985.60x = 182,006,978.40 × 115,669,281.60
  4. Step 4: Simplify right side
    121,337,985.60x = 21,052,616,437,714,716
  5. Step 5: Solve for x
    x = 21,052,616,437,714,716/121,337,985.60
  6. Step 6: Final answer
    x = 173,503,922.40

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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.