Home / 133,264.71-183,842.46-78,780.16

Finding the Fourth Proportional to 133,264.71, 183,842.46 and 78,780.16

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Solution

The fourth proportional to 133,264.71, 183,842.46 and 78,780.16 is: 108,679.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,264.71 : 183,842.46 = 78,780.16 : x
  2. Step 2: Convert to fraction form
    133,264.71/183,842.46 = 78,780.16/x
  3. Step 3: Cross multiply
    133,264.71x = 183,842.46 × 78,780.16
  4. Step 4: Simplify right side
    133,264.71x = 14,483,138,643.40
  5. Step 5: Solve for x
    x = 14,483,138,643.40/133,264.71
  6. Step 6: Final answer
    x = 108,679.47

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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.