Home / 128,126.72-176,825.81-71,549.03

Finding the Fourth Proportional to 128,126.72, 176,825.81 and 71,549.03

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Solution

The fourth proportional to 128,126.72, 176,825.81 and 71,549.03 is: 98,743.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,126.72 : 176,825.81 = 71,549.03 : x
  2. Step 2: Convert to fraction form
    128,126.72/176,825.81 = 71,549.03/x
  3. Step 3: Cross multiply
    128,126.72x = 176,825.81 × 71,549.03
  4. Step 4: Simplify right side
    128,126.72x = 12,651,715,805.40
  5. Step 5: Solve for x
    x = 12,651,715,805.40/128,126.72
  6. Step 6: Final answer
    x = 98,743.77

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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.