Home / 98,715.16-148,072.74-57,139.48

Finding the Fourth Proportional to 98,715.16, 148,072.74 and 57,139.48

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Solution

The fourth proportional to 98,715.16, 148,072.74 and 57,139.48 is: 85,709.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,715.16 : 148,072.74 = 57,139.48 : x
  2. Step 2: Convert to fraction form
    98,715.16/148,072.74 = 57,139.48/x
  3. Step 3: Cross multiply
    98,715.16x = 148,072.74 × 57,139.48
  4. Step 4: Simplify right side
    98,715.16x = 8,460,799,365.78
  5. Step 5: Solve for x
    x = 8,460,799,365.78/98,715.16
  6. Step 6: Final answer
    x = 85,709.22

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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.