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Finding the Fourth Proportional to 125,420.10, 188,158.88 and 54,354.67

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Solution

The fourth proportional to 125,420.10, 188,158.88 and 54,354.67 is: 81,544.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,420.10 : 188,158.88 = 54,354.67 : x
  2. Step 2: Convert to fraction form
    125,420.10/188,158.88 = 54,354.67/x
  3. Step 3: Cross multiply
    125,420.10x = 188,158.88 × 54,354.67
  4. Step 4: Simplify right side
    125,420.10x = 10,227,313,829.97
  5. Step 5: Solve for x
    x = 10,227,313,829.97/125,420.10
  6. Step 6: Final answer
    x = 81,544.46

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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.