Home / 105,972.12-146,180.70-66,159

Finding the Fourth Proportional to 105,972.12, 146,180.70 and 66,159

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Solution

The fourth proportional to 105,972.12, 146,180.70 and 66,159 is: 91,261.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,972.12 : 146,180.70 = 66,159 : x
  2. Step 2: Convert to fraction form
    105,972.12/146,180.70 = 66,159/x
  3. Step 3: Cross multiply
    105,972.12x = 146,180.70 × 66,159
  4. Step 4: Simplify right side
    105,972.12x = 9,671,168,931.30
  5. Step 5: Solve for x
    x = 9,671,168,931.30/105,972.12
  6. Step 6: Final answer
    x = 91,261.45

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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.