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Finding the Fourth Proportional to 136,920.32, 205,259.20 and 53,795.20

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Solution

The fourth proportional to 136,920.32, 205,259.20 and 53,795.20 is: 80,645.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,920.32 : 205,259.20 = 53,795.20 : x
  2. Step 2: Convert to fraction form
    136,920.32/205,259.20 = 53,795.20/x
  3. Step 3: Cross multiply
    136,920.32x = 205,259.20 × 53,795.20
  4. Step 4: Simplify right side
    136,920.32x = 11,041,959,715.84
  5. Step 5: Solve for x
    x = 11,041,959,715.84/136,920.32
  6. Step 6: Final answer
    x = 80,645.15

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1.5x scale

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.