Home / 98,147.28-135,307.12-66,265.68

Finding the Fourth Proportional to 98,147.28, 135,307.12 and 66,265.68

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Solution

The fourth proportional to 98,147.28, 135,307.12 and 66,265.68 is: 91,354.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,147.28 : 135,307.12 = 66,265.68 : x
  2. Step 2: Convert to fraction form
    98,147.28/135,307.12 = 66,265.68/x
  3. Step 3: Cross multiply
    98,147.28x = 135,307.12 × 66,265.68
  4. Step 4: Simplify right side
    98,147.28x = 8,966,218,315.64
  5. Step 5: Solve for x
    x = 8,966,218,315.64/98,147.28
  6. Step 6: Final answer
    x = 91,354.73

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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.