Home / 130,220.46-195,128.69-90,317.30

Finding the Fourth Proportional to 130,220.46, 195,128.69 and 90,317.30

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Solution

The fourth proportional to 130,220.46, 195,128.69 and 90,317.30 is: 135,335.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,220.46 : 195,128.69 = 90,317.30 : x
  2. Step 2: Convert to fraction form
    130,220.46/195,128.69 = 90,317.30/x
  3. Step 3: Cross multiply
    130,220.46x = 195,128.69 × 90,317.30
  4. Step 4: Simplify right side
    130,220.46x = 17,623,495,006.11
  5. Step 5: Solve for x
    x = 17,623,495,006.11/130,220.46
  6. Step 6: Final answer
    x = 135,335.84

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.