Home / 98,130.96-135,449.64-57,857.76

Finding the Fourth Proportional to 98,130.96, 135,449.64 and 57,857.76

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Solution

The fourth proportional to 98,130.96, 135,449.64 and 57,857.76 is: 79,860.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,130.96 : 135,449.64 = 57,857.76 : x
  2. Step 2: Convert to fraction form
    98,130.96/135,449.64 = 57,857.76/x
  3. Step 3: Cross multiply
    98,130.96x = 135,449.64 × 57,857.76
  4. Step 4: Simplify right side
    98,130.96x = 7,836,812,763.21
  5. Step 5: Solve for x
    x = 7,836,812,763.21/98,130.96
  6. Step 6: Final answer
    x = 79,860.76

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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.