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Finding the Fourth Proportional to 124,887.80, 187,266.90 and 45,961.40

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Solution

The fourth proportional to 124,887.80, 187,266.90 and 45,961.40 is: 68,918.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,887.80 : 187,266.90 = 45,961.40 : x
  2. Step 2: Convert to fraction form
    124,887.80/187,266.90 = 45,961.40/x
  3. Step 3: Cross multiply
    124,887.80x = 187,266.90 × 45,961.40
  4. Step 4: Simplify right side
    124,887.80x = 8,607,048,897.66
  5. Step 5: Solve for x
    x = 8,607,048,897.66/124,887.80
  6. Step 6: Final answer
    x = 68,918.25

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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.