Home / 153,780.16-212,231.46-93,336.88

Finding the Fourth Proportional to 153,780.16, 212,231.46 and 93,336.88

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Solution

The fourth proportional to 153,780.16, 212,231.46 and 93,336.88 is: 128,813.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,780.16 : 212,231.46 = 93,336.88 : x
  2. Step 2: Convert to fraction form
    153,780.16/212,231.46 = 93,336.88/x
  3. Step 3: Cross multiply
    153,780.16x = 212,231.46 × 93,336.88
  4. Step 4: Simplify right side
    153,780.16x = 19,809,022,314.24
  5. Step 5: Solve for x
    x = 19,809,022,314.24/153,780.16
  6. Step 6: Final answer
    x = 128,813.90

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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.