Home / 122,378.61-183,623-66,152.89

Finding the Fourth Proportional to 122,378.61, 183,623 and 66,152.89

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Solution

The fourth proportional to 122,378.61, 183,623 and 66,152.89 is: 99,259.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,378.61 : 183,623 = 66,152.89 : x
  2. Step 2: Convert to fraction form
    122,378.61/183,623 = 66,152.89/x
  3. Step 3: Cross multiply
    122,378.61x = 183,623 × 66,152.89
  4. Step 4: Simplify right side
    122,378.61x = 12,147,192,120.47
  5. Step 5: Solve for x
    x = 12,147,192,120.47/122,378.61
  6. Step 6: Final answer
    x = 99,259.11

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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.