Home / 106,778.88-147,360-59,031.36

Finding the Fourth Proportional to 106,778.88, 147,360 and 59,031.36

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Solution

The fourth proportional to 106,778.88, 147,360 and 59,031.36 is: 81,466.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,778.88 : 147,360 = 59,031.36 : x
  2. Step 2: Convert to fraction form
    106,778.88/147,360 = 59,031.36/x
  3. Step 3: Cross multiply
    106,778.88x = 147,360 × 59,031.36
  4. Step 4: Simplify right side
    106,778.88x = 8,698,861,209.60
  5. Step 5: Solve for x
    x = 8,698,861,209.60/106,778.88
  6. Step 6: Final answer
    x = 81,466.12

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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.