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Finding the Fourth Proportional to 116,486.40, 174,729.60 and 76,828.80

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Solution

The fourth proportional to 116,486.40, 174,729.60 and 76,828.80 is: 115,243.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,486.40 : 174,729.60 = 76,828.80 : x
  2. Step 2: Convert to fraction form
    116,486.40/174,729.60 = 76,828.80/x
  3. Step 3: Cross multiply
    116,486.40x = 174,729.60 × 76,828.80
  4. Step 4: Simplify right side
    116,486.40x = 13,424,265,492.48
  5. Step 5: Solve for x
    x = 13,424,265,492.48/116,486.40
  6. Step 6: Final answer
    x = 115,243.20

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1.5x scale

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.