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Finding the Fourth Proportional to 154,098.08, 212,659.56 and 87,030.08

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Solution

The fourth proportional to 154,098.08, 212,659.56 and 87,030.08 is: 120,103.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,098.08 : 212,659.56 = 87,030.08 : x
  2. Step 2: Convert to fraction form
    154,098.08/212,659.56 = 87,030.08/x
  3. Step 3: Cross multiply
    154,098.08x = 212,659.56 × 87,030.08
  4. Step 4: Simplify right side
    154,098.08x = 18,507,778,519.56
  5. Step 5: Solve for x
    x = 18,507,778,519.56/154,098.08
  6. Step 6: Final answer
    x = 120,103.89

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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.