Home / 209,992,081.79-289,745,810.71-120,666,766.37

Finding the Fourth Proportional to 209,992,081.79, 289,745,810.71 and 120,666,766.37

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Solution

The fourth proportional to 209,992,081.79, 289,745,810.71 and 120,666,766.37 is: 166,495,278.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,992,081.79 : 289,745,810.71 = 120,666,766.37 : x
  2. Step 2: Convert to fraction form
    209,992,081.79/289,745,810.71 = 120,666,766.37/x
  3. Step 3: Cross multiply
    209,992,081.79x = 289,745,810.71 × 120,666,766.37
  4. Step 4: Simplify right side
    209,992,081.79x = 34,962,690,046,386,220
  5. Step 5: Solve for x
    x = 34,962,690,046,386,220/209,992,081.79
  6. Step 6: Final answer
    x = 166,495,278.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.