Home / 102,871.40-141,975.60-57,551.90

Finding the Fourth Proportional to 102,871.40, 141,975.60 and 57,551.90

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Solution

The fourth proportional to 102,871.40, 141,975.60 and 57,551.90 is: 79,428.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,871.40 : 141,975.60 = 57,551.90 : x
  2. Step 2: Convert to fraction form
    102,871.40/141,975.60 = 57,551.90/x
  3. Step 3: Cross multiply
    102,871.40x = 141,975.60 × 57,551.90
  4. Step 4: Simplify right side
    102,871.40x = 8,170,965,533.64
  5. Step 5: Solve for x
    x = 8,170,965,533.64/102,871.40
  6. Step 6: Final answer
    x = 79,428.93

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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.