Home / 145,935.39-201,390.45-78,867.39

Finding the Fourth Proportional to 145,935.39, 201,390.45 and 78,867.39

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Solution

The fourth proportional to 145,935.39, 201,390.45 and 78,867.39 is: 108,836.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,935.39 : 201,390.45 = 78,867.39 : x
  2. Step 2: Convert to fraction form
    145,935.39/201,390.45 = 78,867.39/x
  3. Step 3: Cross multiply
    145,935.39x = 201,390.45 × 78,867.39
  4. Step 4: Simplify right side
    145,935.39x = 15,883,139,162.43
  5. Step 5: Solve for x
    x = 15,883,139,162.43/145,935.39
  6. Step 6: Final answer
    x = 108,836.79

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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.