Home / 128,765,797.92-193,148,749.08-31,723,395.12

Finding the Fourth Proportional to 128,765,797.92, 193,148,749.08 and 31,723,395.12

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Solution

The fourth proportional to 128,765,797.92, 193,148,749.08 and 31,723,395.12 is: 47,585,105.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,765,797.92 : 193,148,749.08 = 31,723,395.12 : x
  2. Step 2: Convert to fraction form
    128,765,797.92/193,148,749.08 = 31,723,395.12/x
  3. Step 3: Cross multiply
    128,765,797.92x = 193,148,749.08 × 31,723,395.12
  4. Step 4: Simplify right side
    128,765,797.92x = 6,127,334,083,998,577
  5. Step 5: Solve for x
    x = 6,127,334,083,998,577/128,765,797.92
  6. Step 6: Final answer
    x = 47,585,105.54

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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.