Home / 136,872.10-205,271.70-42,102.10

Finding the Fourth Proportional to 136,872.10, 205,271.70 and 42,102.10

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Solution

The fourth proportional to 136,872.10, 205,271.70 and 42,102.10 is: 63,141.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,872.10 : 205,271.70 = 42,102.10 : x
  2. Step 2: Convert to fraction form
    136,872.10/205,271.70 = 42,102.10/x
  3. Step 3: Cross multiply
    136,872.10x = 205,271.70 × 42,102.10
  4. Step 4: Simplify right side
    136,872.10x = 8,642,369,640.57
  5. Step 5: Solve for x
    x = 8,642,369,640.57/136,872.10
  6. Step 6: Final answer
    x = 63,141.94

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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.