Home / 97,615.80-134,708.40-55,172.88

Finding the Fourth Proportional to 97,615.80, 134,708.40 and 55,172.88

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Solution

The fourth proportional to 97,615.80, 134,708.40 and 55,172.88 is: 76,137.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,615.80 : 134,708.40 = 55,172.88 : x
  2. Step 2: Convert to fraction form
    97,615.80/134,708.40 = 55,172.88/x
  3. Step 3: Cross multiply
    97,615.80x = 134,708.40 × 55,172.88
  4. Step 4: Simplify right side
    97,615.80x = 7,432,250,388.19
  5. Step 5: Solve for x
    x = 7,432,250,388.19/97,615.80
  6. Step 6: Final answer
    x = 76,137.78

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1.5x scale

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.