Home / 128,009,069.23-176,633,512.42-77,747,132.46

Finding the Fourth Proportional to 128,009,069.23, 176,633,512.42 and 77,747,132.46

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Solution

The fourth proportional to 128,009,069.23, 176,633,512.42 and 77,747,132.46 is: 107,279,501.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,009,069.23 : 176,633,512.42 = 77,747,132.46 : x
  2. Step 2: Convert to fraction form
    128,009,069.23/176,633,512.42 = 77,747,132.46/x
  3. Step 3: Cross multiply
    128,009,069.23x = 176,633,512.42 × 77,747,132.46
  4. Step 4: Simplify right side
    128,009,069.23x = 13,732,749,086,992,792
  5. Step 5: Solve for x
    x = 13,732,749,086,992,792/128,009,069.23
  6. Step 6: Final answer
    x = 107,279,501.13

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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.