Home / 153,102.66-211,288.70-85,126.55

Finding the Fourth Proportional to 153,102.66, 211,288.70 and 85,126.55

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Solution

The fourth proportional to 153,102.66, 211,288.70 and 85,126.55 is: 117,478.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,102.66 : 211,288.70 = 85,126.55 : x
  2. Step 2: Convert to fraction form
    153,102.66/211,288.70 = 85,126.55/x
  3. Step 3: Cross multiply
    153,102.66x = 211,288.70 × 85,126.55
  4. Step 4: Simplify right side
    153,102.66x = 17,986,277,241.36
  5. Step 5: Solve for x
    x = 17,986,277,241.36/153,102.66
  6. Step 6: Final answer
    x = 117,478.54

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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.