Home / 100,308,278.67-138,426,427.27-56,254,331.68

Finding the Fourth Proportional to 100,308,278.67, 138,426,427.27 and 56,254,331.68

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Solution

The fourth proportional to 100,308,278.67, 138,426,427.27 and 56,254,331.68 is: 77,631,540.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,308,278.67 : 138,426,427.27 = 56,254,331.68 : x
  2. Step 2: Convert to fraction form
    100,308,278.67/138,426,427.27 = 56,254,331.68/x
  3. Step 3: Cross multiply
    100,308,278.67x = 138,426,427.27 × 56,254,331.68
  4. Step 4: Simplify right side
    100,308,278.67x = 7,787,086,152,923,977
  5. Step 5: Solve for x
    x = 7,787,086,152,923,977/100,308,278.67
  6. Step 6: Final answer
    x = 77,631,540.05

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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.