Home / 125,168.64-187,752.80-42,120.96

Finding the Fourth Proportional to 125,168.64, 187,752.80 and 42,120.96

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Solution

The fourth proportional to 125,168.64, 187,752.80 and 42,120.96 is: 63,181.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,168.64 : 187,752.80 = 42,120.96 : x
  2. Step 2: Convert to fraction form
    125,168.64/187,752.80 = 42,120.96/x
  3. Step 3: Cross multiply
    125,168.64x = 187,752.80 × 42,120.96
  4. Step 4: Simplify right side
    125,168.64x = 7,908,328,178.69
  5. Step 5: Solve for x
    x = 7,908,328,178.69/125,168.64
  6. Step 6: Final answer
    x = 63,181.39

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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.