Home / 98,145.90-135,431.17-55,130.22

Finding the Fourth Proportional to 98,145.90, 135,431.17 and 55,130.22

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Solution

The fourth proportional to 98,145.90, 135,431.17 and 55,130.22 is: 76,073.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,145.90 : 135,431.17 = 55,130.22 : x
  2. Step 2: Convert to fraction form
    98,145.90/135,431.17 = 55,130.22/x
  3. Step 3: Cross multiply
    98,145.90x = 135,431.17 × 55,130.22
  4. Step 4: Simplify right side
    98,145.90x = 7,466,350,196.96
  5. Step 5: Solve for x
    x = 7,466,350,196.96/98,145.90
  6. Step 6: Final answer
    x = 76,073.99

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1.5x scale

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.