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Finding the Fourth Proportional to 153,473.88, 211,803.68 and 86,410.20

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Solution

The fourth proportional to 153,473.88, 211,803.68 and 86,410.20 is: 119,251.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,473.88 : 211,803.68 = 86,410.20 : x
  2. Step 2: Convert to fraction form
    153,473.88/211,803.68 = 86,410.20/x
  3. Step 3: Cross multiply
    153,473.88x = 211,803.68 × 86,410.20
  4. Step 4: Simplify right side
    153,473.88x = 18,301,998,349.54
  5. Step 5: Solve for x
    x = 18,301,998,349.54/153,473.88
  6. Step 6: Final answer
    x = 119,251.55

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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.