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Finding the Fourth Proportional to 212,420.80, 293,116.65 and 125,200.20

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Solution

The fourth proportional to 212,420.80, 293,116.65 and 125,200.20 is: 172,762.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,420.80 : 293,116.65 = 125,200.20 : x
  2. Step 2: Convert to fraction form
    212,420.80/293,116.65 = 125,200.20/x
  3. Step 3: Cross multiply
    212,420.80x = 293,116.65 × 125,200.20
  4. Step 4: Simplify right side
    212,420.80x = 36,698,263,203.33
  5. Step 5: Solve for x
    x = 36,698,263,203.33/212,420.80
  6. Step 6: Final answer
    x = 172,762.10

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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.