Home / 100,283.16-138,356.82-57,840.60

Finding the Fourth Proportional to 100,283.16, 138,356.82 and 57,840.60

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Solution

The fourth proportional to 100,283.16, 138,356.82 and 57,840.60 is: 79,800.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,283.16 : 138,356.82 = 57,840.60 : x
  2. Step 2: Convert to fraction form
    100,283.16/138,356.82 = 57,840.60/x
  3. Step 3: Cross multiply
    100,283.16x = 138,356.82 × 57,840.60
  4. Step 4: Simplify right side
    100,283.16x = 8,002,641,482.89
  5. Step 5: Solve for x
    x = 8,002,641,482.89/100,283.16
  6. Step 6: Final answer
    x = 79,800.45

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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.