Home / 99,788.40-137,671.80-76,825.26

Finding the Fourth Proportional to 99,788.40, 137,671.80 and 76,825.26

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Solution

The fourth proportional to 99,788.40, 137,671.80 and 76,825.26 is: 105,991.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,788.40 : 137,671.80 = 76,825.26 : x
  2. Step 2: Convert to fraction form
    99,788.40/137,671.80 = 76,825.26/x
  3. Step 3: Cross multiply
    99,788.40x = 137,671.80 × 76,825.26
  4. Step 4: Simplify right side
    99,788.40x = 10,576,671,829.67
  5. Step 5: Solve for x
    x = 10,576,671,829.67/99,788.40
  6. Step 6: Final answer
    x = 105,991.00

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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.