Home / 153,714.07-212,126.66-85,728.79

Finding the Fourth Proportional to 153,714.07, 212,126.66 and 85,728.79

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Solution

The fourth proportional to 153,714.07, 212,126.66 and 85,728.79 is: 118,306.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,714.07 : 212,126.66 = 85,728.79 : x
  2. Step 2: Convert to fraction form
    153,714.07/212,126.66 = 85,728.79/x
  3. Step 3: Cross multiply
    153,714.07x = 212,126.66 × 85,728.79
  4. Step 4: Simplify right side
    153,714.07x = 18,185,361,888.54
  5. Step 5: Solve for x
    x = 18,185,361,888.54/153,714.07
  6. Step 6: Final answer
    x = 118,306.42

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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.