Home / 128,911,947.72-193,238,628.76-59,873,235.54

Finding the Fourth Proportional to 128,911,947.72, 193,238,628.76 and 59,873,235.54

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Solution

The fourth proportional to 128,911,947.72, 193,238,628.76 and 59,873,235.54 is: 89,749,803.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,911,947.72 : 193,238,628.76 = 59,873,235.54 : x
  2. Step 2: Convert to fraction form
    128,911,947.72/193,238,628.76 = 59,873,235.54/x
  3. Step 3: Cross multiply
    128,911,947.72x = 193,238,628.76 × 59,873,235.54
  4. Step 4: Simplify right side
    128,911,947.72x = 11,569,821,935,174,098
  5. Step 5: Solve for x
    x = 11,569,821,935,174,098/128,911,947.72
  6. Step 6: Final answer
    x = 89,749,803.18

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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.