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Finding the Fourth Proportional to 145,060.88, 217,658.24 and 66,199.28

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Solution

The fourth proportional to 145,060.88, 217,658.24 and 66,199.28 is: 99,329.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,060.88 : 217,658.24 = 66,199.28 : x
  2. Step 2: Convert to fraction form
    145,060.88/217,658.24 = 66,199.28/x
  3. Step 3: Cross multiply
    145,060.88x = 217,658.24 × 66,199.28
  4. Step 4: Simplify right side
    145,060.88x = 14,408,818,774.07
  5. Step 5: Solve for x
    x = 14,408,818,774.07/145,060.88
  6. Step 6: Final answer
    x = 99,329.46

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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.