Home / 400,985.14-601,611.98-131,125.72

Finding the Fourth Proportional to 400,985.14, 601,611.98 and 131,125.72

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Solution

The fourth proportional to 400,985.14, 601,611.98 and 131,125.72 is: 196,732.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,985.14 : 601,611.98 = 131,125.72 : x
  2. Step 2: Convert to fraction form
    400,985.14/601,611.98 = 131,125.72/x
  3. Step 3: Cross multiply
    400,985.14x = 601,611.98 × 131,125.72
  4. Step 4: Simplify right side
    400,985.14x = 78,886,804,038.13
  5. Step 5: Solve for x
    x = 78,886,804,038.13/400,985.14
  6. Step 6: Final answer
    x = 196,732.49

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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.