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Finding the Fourth Proportional to 154,475.92, 213,127.23 and 86,482.90

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Solution

The fourth proportional to 154,475.92, 213,127.23 and 86,482.90 is: 119,318.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,475.92 : 213,127.23 = 86,482.90 : x
  2. Step 2: Convert to fraction form
    154,475.92/213,127.23 = 86,482.90/x
  3. Step 3: Cross multiply
    154,475.92x = 213,127.23 × 86,482.90
  4. Step 4: Simplify right side
    154,475.92x = 18,431,860,919.37
  5. Step 5: Solve for x
    x = 18,431,860,919.37/154,475.92
  6. Step 6: Final answer
    x = 119,318.67

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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.