Home / 221,917.16-306,302.64-136,985.42

Finding the Fourth Proportional to 221,917.16, 306,302.64 and 136,985.42

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Solution

The fourth proportional to 221,917.16, 306,302.64 and 136,985.42 is: 189,075.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,917.16 : 306,302.64 = 136,985.42 : x
  2. Step 2: Convert to fraction form
    221,917.16/306,302.64 = 136,985.42/x
  3. Step 3: Cross multiply
    221,917.16x = 306,302.64 × 136,985.42
  4. Step 4: Simplify right side
    221,917.16x = 41,958,995,787.51
  5. Step 5: Solve for x
    x = 41,958,995,787.51/221,917.16
  6. Step 6: Final answer
    x = 189,075.04

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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.