Home / 153,693.12-212,097.72-85,714.50

Finding the Fourth Proportional to 153,693.12, 212,097.72 and 85,714.50

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Solution

The fourth proportional to 153,693.12, 212,097.72 and 85,714.50 is: 118,286.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,693.12 : 212,097.72 = 85,714.50 : x
  2. Step 2: Convert to fraction form
    153,693.12/212,097.72 = 85,714.50/x
  3. Step 3: Cross multiply
    153,693.12x = 212,097.72 × 85,714.50
  4. Step 4: Simplify right side
    153,693.12x = 18,179,850,020.94
  5. Step 5: Solve for x
    x = 18,179,850,020.94/153,693.12
  6. Step 6: Final answer
    x = 118,286.69

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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.