Home / 102,906.90-142,004.65-56,963.43

Finding the Fourth Proportional to 102,906.90, 142,004.65 and 56,963.43

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Solution

The fourth proportional to 102,906.90, 142,004.65 and 56,963.43 is: 78,605.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,906.90 : 142,004.65 = 56,963.43 : x
  2. Step 2: Convert to fraction form
    102,906.90/142,004.65 = 56,963.43/x
  3. Step 3: Cross multiply
    102,906.90x = 142,004.65 × 56,963.43
  4. Step 4: Simplify right side
    102,906.90x = 8,089,072,264.25
  5. Step 5: Solve for x
    x = 8,089,072,264.25/102,906.90
  6. Step 6: Final answer
    x = 78,605.73

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1.5x scale

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.