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Finding the Fourth Proportional to 153,801.60, 230,799.60 and 90,621.60

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Solution

The fourth proportional to 153,801.60, 230,799.60 and 90,621.60 is: 135,989.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,801.60 : 230,799.60 = 90,621.60 : x
  2. Step 2: Convert to fraction form
    153,801.60/230,799.60 = 90,621.60/x
  3. Step 3: Cross multiply
    153,801.60x = 230,799.60 × 90,621.60
  4. Step 4: Simplify right side
    153,801.60x = 20,915,429,031.36
  5. Step 5: Solve for x
    x = 20,915,429,031.36/153,801.60
  6. Step 6: Final answer
    x = 135,989.67

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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.