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Finding the Fourth Proportional to 154,798.68, 213,644.10 and 85,903.62

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Solution

The fourth proportional to 154,798.68, 213,644.10 and 85,903.62 is: 118,559.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,798.68 : 213,644.10 = 85,903.62 : x
  2. Step 2: Convert to fraction form
    154,798.68/213,644.10 = 85,903.62/x
  3. Step 3: Cross multiply
    154,798.68x = 213,644.10 × 85,903.62
  4. Step 4: Simplify right side
    154,798.68x = 18,352,801,581.64
  5. Step 5: Solve for x
    x = 18,352,801,581.64/154,798.68
  6. Step 6: Final answer
    x = 118,559.16

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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.