Home / 153,270.15-211,512.78-85,291.50

Finding the Fourth Proportional to 153,270.15, 211,512.78 and 85,291.50

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Solution

The fourth proportional to 153,270.15, 211,512.78 and 85,291.50 is: 117,702.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,270.15 : 211,512.78 = 85,291.50 : x
  2. Step 2: Convert to fraction form
    153,270.15/211,512.78 = 85,291.50/x
  3. Step 3: Cross multiply
    153,270.15x = 211,512.78 × 85,291.50
  4. Step 4: Simplify right side
    153,270.15x = 18,040,242,275.37
  5. Step 5: Solve for x
    x = 18,040,242,275.37/153,270.15
  6. Step 6: Final answer
    x = 117,702.25

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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.