Home / 187,090.30-280,460.50-68,729.86

Finding the Fourth Proportional to 187,090.30, 280,460.50 and 68,729.86

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Solution

The fourth proportional to 187,090.30, 280,460.50 and 68,729.86 is: 103,030.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,090.30 : 280,460.50 = 68,729.86 : x
  2. Step 2: Convert to fraction form
    187,090.30/280,460.50 = 68,729.86/x
  3. Step 3: Cross multiply
    187,090.30x = 280,460.50 × 68,729.86
  4. Step 4: Simplify right side
    187,090.30x = 19,276,010,900.53
  5. Step 5: Solve for x
    x = 19,276,010,900.53/187,090.30
  6. Step 6: Final answer
    x = 103,030.52

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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.