Home / 145,934.64-201,390-78,866.64

Finding the Fourth Proportional to 145,934.64, 201,390 and 78,866.64

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Solution

The fourth proportional to 145,934.64, 201,390 and 78,866.64 is: 108,836.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,934.64 : 201,390 = 78,866.64 : x
  2. Step 2: Convert to fraction form
    145,934.64/201,390 = 78,866.64/x
  3. Step 3: Cross multiply
    145,934.64x = 201,390 × 78,866.64
  4. Step 4: Simplify right side
    145,934.64x = 15,882,952,629.60
  5. Step 5: Solve for x
    x = 15,882,952,629.60/145,934.64
  6. Step 6: Final answer
    x = 108,836.07

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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.