Home / 130,376.64-179,910.72-76,664

Finding the Fourth Proportional to 130,376.64, 179,910.72 and 76,664

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Solution

The fourth proportional to 130,376.64, 179,910.72 and 76,664 is: 105,791.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,376.64 : 179,910.72 = 76,664 : x
  2. Step 2: Convert to fraction form
    130,376.64/179,910.72 = 76,664/x
  3. Step 3: Cross multiply
    130,376.64x = 179,910.72 × 76,664
  4. Step 4: Simplify right side
    130,376.64x = 13,792,675,438.08
  5. Step 5: Solve for x
    x = 13,792,675,438.08/130,376.64
  6. Step 6: Final answer
    x = 105,791.00

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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.