Home / 100,330,725.47-138,456,118.13-55,683,438.66

Finding the Fourth Proportional to 100,330,725.47, 138,456,118.13 and 55,683,438.66

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Solution

The fourth proportional to 100,330,725.47, 138,456,118.13 and 55,683,438.66 is: 76,842,988.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,330,725.47 : 138,456,118.13 = 55,683,438.66 : x
  2. Step 2: Convert to fraction form
    100,330,725.47/138,456,118.13 = 55,683,438.66/x
  3. Step 3: Cross multiply
    100,330,725.47x = 138,456,118.13 × 55,683,438.66
  4. Step 4: Simplify right side
    100,330,725.47x = 7,709,712,760,715,151
  5. Step 5: Solve for x
    x = 7,709,712,760,715,151/100,330,725.47
  6. Step 6: Final answer
    x = 76,842,988.28

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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.