Home / 153,143.12-211,335.24-86,074.64

Finding the Fourth Proportional to 153,143.12, 211,335.24 and 86,074.64

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Solution

The fourth proportional to 153,143.12, 211,335.24 and 86,074.64 is: 118,781.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,143.12 : 211,335.24 = 86,074.64 : x
  2. Step 2: Convert to fraction form
    153,143.12/211,335.24 = 86,074.64/x
  3. Step 3: Cross multiply
    153,143.12x = 211,335.24 × 86,074.64
  4. Step 4: Simplify right side
    153,143.12x = 18,190,604,702.31
  5. Step 5: Solve for x
    x = 18,190,604,702.31/153,143.12
  6. Step 6: Final answer
    x = 118,781.73

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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.