Home / 153,587.12-211,951.26-85,608.47

Finding the Fourth Proportional to 153,587.12, 211,951.26 and 85,608.47

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Solution

The fourth proportional to 153,587.12, 211,951.26 and 85,608.47 is: 118,140.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,587.12 : 211,951.26 = 85,608.47 : x
  2. Step 2: Convert to fraction form
    153,587.12/211,951.26 = 85,608.47/x
  3. Step 3: Cross multiply
    153,587.12x = 211,951.26 × 85,608.47
  4. Step 4: Simplify right side
    153,587.12x = 18,144,823,613.05
  5. Step 5: Solve for x
    x = 18,144,823,613.05/153,587.12
  6. Step 6: Final answer
    x = 118,140.27

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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.