Home / 209,586,749.64-289,222,931.70-120,293,391.30

Finding the Fourth Proportional to 209,586,749.64, 289,222,931.70 and 120,293,391.30

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Solution

The fourth proportional to 209,586,749.64, 289,222,931.70 and 120,293,391.30 is: 166,000,986.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,586,749.64 : 289,222,931.70 = 120,293,391.30 : x
  2. Step 2: Convert to fraction form
    209,586,749.64/289,222,931.70 = 120,293,391.30/x
  3. Step 3: Cross multiply
    209,586,749.64x = 289,222,931.70 × 120,293,391.30
  4. Step 4: Simplify right side
    209,586,749.64x = 34,791,607,295,921,272
  5. Step 5: Solve for x
    x = 34,791,607,295,921,272/209,586,749.64
  6. Step 6: Final answer
    x = 166,000,986.97

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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.