Home / 97,420.70-146,131.05-86,534.30

Finding the Fourth Proportional to 97,420.70, 146,131.05 and 86,534.30

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Solution

The fourth proportional to 97,420.70, 146,131.05 and 86,534.30 is: 129,801.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,420.70 : 146,131.05 = 86,534.30 : x
  2. Step 2: Convert to fraction form
    97,420.70/146,131.05 = 86,534.30/x
  3. Step 3: Cross multiply
    97,420.70x = 146,131.05 × 86,534.30
  4. Step 4: Simplify right side
    97,420.70x = 12,645,348,120.02
  5. Step 5: Solve for x
    x = 12,645,348,120.02/97,420.70
  6. Step 6: Final answer
    x = 129,801.45

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1.5x scale

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.