Home / 153,153.12-211,349.04-86,084.64

Finding the Fourth Proportional to 153,153.12, 211,349.04 and 86,084.64

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Solution

The fourth proportional to 153,153.12, 211,349.04 and 86,084.64 is: 118,795.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,153.12 : 211,349.04 = 86,084.64 : x
  2. Step 2: Convert to fraction form
    153,153.12/211,349.04 = 86,084.64/x
  3. Step 3: Cross multiply
    153,153.12x = 211,349.04 × 86,084.64
  4. Step 4: Simplify right side
    153,153.12x = 18,193,906,022.75
  5. Step 5: Solve for x
    x = 18,193,906,022.75/153,153.12
  6. Step 6: Final answer
    x = 118,795.53

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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.