Home / 130,664.84-180,372.65-88,280.78

Finding the Fourth Proportional to 130,664.84, 180,372.65 and 88,280.78

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Solution

The fourth proportional to 130,664.84, 180,372.65 and 88,280.78 is: 121,864.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,664.84 : 180,372.65 = 88,280.78 : x
  2. Step 2: Convert to fraction form
    130,664.84/180,372.65 = 88,280.78/x
  3. Step 3: Cross multiply
    130,664.84x = 180,372.65 × 88,280.78
  4. Step 4: Simplify right side
    130,664.84x = 15,923,436,889.40
  5. Step 5: Solve for x
    x = 15,923,436,889.40/130,664.84
  6. Step 6: Final answer
    x = 121,864.75

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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.