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Finding the Fourth Proportional to 150,281.28, 207,387.84 and 86,618.64

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Solution

The fourth proportional to 150,281.28, 207,387.84 and 86,618.64 is: 119,533.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    150,281.28 : 207,387.84 = 86,618.64 : x
  2. Step 2: Convert to fraction form
    150,281.28/207,387.84 = 86,618.64/x
  3. Step 3: Cross multiply
    150,281.28x = 207,387.84 × 86,618.64
  4. Step 4: Simplify right side
    150,281.28x = 17,963,652,653.34
  5. Step 5: Solve for x
    x = 17,963,652,653.34/150,281.28
  6. Step 6: Final answer
    x = 119,533.54

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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.