Home / 100,218,780-138,299,564.16-58,968,344.16

Finding the Fourth Proportional to 100,218,780, 138,299,564.16 and 58,968,344.16

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Solution

The fourth proportional to 100,218,780, 138,299,564.16 and 58,968,344.16 is: 81,374,930.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,218,780 : 138,299,564.16 = 58,968,344.16 : x
  2. Step 2: Convert to fraction form
    100,218,780/138,299,564.16 = 58,968,344.16/x
  3. Step 3: Cross multiply
    100,218,780x = 138,299,564.16 × 58,968,344.16
  4. Step 4: Simplify right side
    100,218,780x = 8,155,296,296,564,881
  5. Step 5: Solve for x
    x = 8,155,296,296,564,881/100,218,780
  6. Step 6: Final answer
    x = 81,374,930.89

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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.