Home / 130,938.48-180,711.96-79,940.52

Finding the Fourth Proportional to 130,938.48, 180,711.96 and 79,940.52

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Solution

The fourth proportional to 130,938.48, 180,711.96 and 79,940.52 is: 110,328.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,938.48 : 180,711.96 = 79,940.52 : x
  2. Step 2: Convert to fraction form
    130,938.48/180,711.96 = 79,940.52/x
  3. Step 3: Cross multiply
    130,938.48x = 180,711.96 × 79,940.52
  4. Step 4: Simplify right side
    130,938.48x = 14,446,208,052.62
  5. Step 5: Solve for x
    x = 14,446,208,052.62/130,938.48
  6. Step 6: Final answer
    x = 110,328.21

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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.