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Finding the Fourth Proportional to 154,523.48, 213,269.10 and 87,455.48

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Solution

The fourth proportional to 154,523.48, 213,269.10 and 87,455.48 is: 120,703.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,523.48 : 213,269.10 = 87,455.48 : x
  2. Step 2: Convert to fraction form
    154,523.48/213,269.10 = 87,455.48/x
  3. Step 3: Cross multiply
    154,523.48x = 213,269.10 × 87,455.48
  4. Step 4: Simplify right side
    154,523.48x = 18,651,551,509.67
  5. Step 5: Solve for x
    x = 18,651,551,509.67/154,523.48
  6. Step 6: Final answer
    x = 120,703.67

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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.