Home / 153,728.20-212,112.66-93,330.64

Finding the Fourth Proportional to 153,728.20, 212,112.66 and 93,330.64

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Solution

The fourth proportional to 153,728.20, 212,112.66 and 93,330.64 is: 128,776.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,728.20 : 212,112.66 = 93,330.64 : x
  2. Step 2: Convert to fraction form
    153,728.20/212,112.66 = 93,330.64/x
  3. Step 3: Cross multiply
    153,728.20x = 212,112.66 × 93,330.64
  4. Step 4: Simplify right side
    153,728.20x = 19,796,610,309.90
  5. Step 5: Solve for x
    x = 19,796,610,309.90/153,728.20
  6. Step 6: Final answer
    x = 128,776.70

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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.