Home / 125,271.42-187,789.53-42,107.10

Finding the Fourth Proportional to 125,271.42, 187,789.53 and 42,107.10

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Solution

The fourth proportional to 125,271.42, 187,789.53 and 42,107.10 is: 63,121.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,271.42 : 187,789.53 = 42,107.10 : x
  2. Step 2: Convert to fraction form
    125,271.42/187,789.53 = 42,107.10/x
  3. Step 3: Cross multiply
    125,271.42x = 187,789.53 × 42,107.10
  4. Step 4: Simplify right side
    125,271.42x = 7,907,272,518.66
  5. Step 5: Solve for x
    x = 7,907,272,518.66/125,271.42
  6. Step 6: Final answer
    x = 63,121.12

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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.