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Finding the Fourth Proportional to 159,145.10, 219,624.45 and 86,552.90

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Solution

The fourth proportional to 159,145.10, 219,624.45 and 86,552.90 is: 119,445.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,145.10 : 219,624.45 = 86,552.90 : x
  2. Step 2: Convert to fraction form
    159,145.10/219,624.45 = 86,552.90/x
  3. Step 3: Cross multiply
    159,145.10x = 219,624.45 × 86,552.90
  4. Step 4: Simplify right side
    159,145.10x = 19,009,133,058.41
  5. Step 5: Solve for x
    x = 19,009,133,058.41/159,145.10
  6. Step 6: Final answer
    x = 119,445.29

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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.