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Finding the Fourth Proportional to 155,710.98, 214,881.15 and 84,091.02

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Solution

The fourth proportional to 155,710.98, 214,881.15 and 84,091.02 is: 116,045.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,710.98 : 214,881.15 = 84,091.02 : x
  2. Step 2: Convert to fraction form
    155,710.98/214,881.15 = 84,091.02/x
  3. Step 3: Cross multiply
    155,710.98x = 214,881.15 × 84,091.02
  4. Step 4: Simplify right side
    155,710.98x = 18,069,575,082.27
  5. Step 5: Solve for x
    x = 18,069,575,082.27/155,710.98
  6. Step 6: Final answer
    x = 116,045.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.