Home / 109,549.76-164,392.68-70,135.16

Finding the Fourth Proportional to 109,549.76, 164,392.68 and 70,135.16

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Solution

The fourth proportional to 109,549.76, 164,392.68 and 70,135.16 is: 105,246.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,549.76 : 164,392.68 = 70,135.16 : x
  2. Step 2: Convert to fraction form
    109,549.76/164,392.68 = 70,135.16/x
  3. Step 3: Cross multiply
    109,549.76x = 164,392.68 × 70,135.16
  4. Step 4: Simplify right side
    109,549.76x = 11,529,706,914.63
  5. Step 5: Solve for x
    x = 11,529,706,914.63/109,549.76
  6. Step 6: Final answer
    x = 105,246.30

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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.