Home / 136,807.20-205,208.56-43,312.80

Finding the Fourth Proportional to 136,807.20, 205,208.56 and 43,312.80

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Solution

The fourth proportional to 136,807.20, 205,208.56 and 43,312.80 is: 64,968.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,807.20 : 205,208.56 = 43,312.80 : x
  2. Step 2: Convert to fraction form
    136,807.20/205,208.56 = 43,312.80/x
  3. Step 3: Cross multiply
    136,807.20x = 205,208.56 × 43,312.80
  4. Step 4: Simplify right side
    136,807.20x = 8,888,157,317.57
  5. Step 5: Solve for x
    x = 8,888,157,317.57/136,807.20
  6. Step 6: Final answer
    x = 64,968.49

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.