Home / 107,130.40-147,836.75-58,731.31

Finding the Fourth Proportional to 107,130.40, 147,836.75 and 58,731.31

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Solution

The fourth proportional to 107,130.40, 147,836.75 and 58,731.31 is: 81,047.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,130.40 : 147,836.75 = 58,731.31 : x
  2. Step 2: Convert to fraction form
    107,130.40/147,836.75 = 58,731.31/x
  3. Step 3: Cross multiply
    107,130.40x = 147,836.75 × 58,731.31
  4. Step 4: Simplify right side
    107,130.40x = 8,682,645,884.78
  5. Step 5: Solve for x
    x = 8,682,645,884.78/107,130.40
  6. Step 6: Final answer
    x = 81,047.45

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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.