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Finding the Fourth Proportional to 169,991.10, 255,059.55 and 86,885.10

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Solution

The fourth proportional to 169,991.10, 255,059.55 and 86,885.10 is: 130,364.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,991.10 : 255,059.55 = 86,885.10 : x
  2. Step 2: Convert to fraction form
    169,991.10/255,059.55 = 86,885.10/x
  3. Step 3: Cross multiply
    169,991.10x = 255,059.55 × 86,885.10
  4. Step 4: Simplify right side
    169,991.10x = 22,160,874,507.71
  5. Step 5: Solve for x
    x = 22,160,874,507.71/169,991.10
  6. Step 6: Final answer
    x = 130,364.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.