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Finding the Fourth Proportional to 160,443.81, 221,404.03 and 87,832.79

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Solution

The fourth proportional to 160,443.81, 221,404.03 and 87,832.79 is: 121,204.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    160,443.81 : 221,404.03 = 87,832.79 : x
  2. Step 2: Convert to fraction form
    160,443.81/221,404.03 = 87,832.79/x
  3. Step 3: Cross multiply
    160,443.81x = 221,404.03 × 87,832.79
  4. Step 4: Simplify right side
    160,443.81x = 19,446,534,603.91
  5. Step 5: Solve for x
    x = 19,446,534,603.91/160,443.81
  6. Step 6: Final answer
    x = 121,204.64

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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.