Home / 145,904.64-201,348.16-78,836.48

Finding the Fourth Proportional to 145,904.64, 201,348.16 and 78,836.48

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Solution

The fourth proportional to 145,904.64, 201,348.16 and 78,836.48 is: 108,794.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,904.64 : 201,348.16 = 78,836.48 : x
  2. Step 2: Convert to fraction form
    145,904.64/201,348.16 = 78,836.48/x
  3. Step 3: Cross multiply
    145,904.64x = 201,348.16 × 78,836.48
  4. Step 4: Simplify right side
    145,904.64x = 15,873,580,188.88
  5. Step 5: Solve for x
    x = 15,873,580,188.88/145,904.64
  6. Step 6: Final answer
    x = 108,794.21

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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.