Home / 107,977.80-161,966.70-72,548.40

Finding the Fourth Proportional to 107,977.80, 161,966.70 and 72,548.40

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Solution

The fourth proportional to 107,977.80, 161,966.70 and 72,548.40 is: 108,822.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,977.80 : 161,966.70 = 72,548.40 : x
  2. Step 2: Convert to fraction form
    107,977.80/161,966.70 = 72,548.40/x
  3. Step 3: Cross multiply
    107,977.80x = 161,966.70 × 72,548.40
  4. Step 4: Simplify right side
    107,977.80x = 11,750,424,938.28
  5. Step 5: Solve for x
    x = 11,750,424,938.28/107,977.80
  6. Step 6: Final answer
    x = 108,822.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.