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Finding the Fourth Proportional to 116,522.40, 174,697.20 and 78,988.80

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Solution

The fourth proportional to 116,522.40, 174,697.20 and 78,988.80 is: 118,424.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,522.40 : 174,697.20 = 78,988.80 : x
  2. Step 2: Convert to fraction form
    116,522.40/174,697.20 = 78,988.80/x
  3. Step 3: Cross multiply
    116,522.40x = 174,697.20 × 78,988.80
  4. Step 4: Simplify right side
    116,522.40x = 13,799,122,191.36
  5. Step 5: Solve for x
    x = 13,799,122,191.36/116,522.40
  6. Step 6: Final answer
    x = 118,424.63

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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.