Home / 135,071.81-186,398.38-74,646.65

Finding the Fourth Proportional to 135,071.81, 186,398.38 and 74,646.65

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Solution

The fourth proportional to 135,071.81, 186,398.38 and 74,646.65 is: 103,011.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,071.81 : 186,398.38 = 74,646.65 : x
  2. Step 2: Convert to fraction form
    135,071.81/186,398.38 = 74,646.65/x
  3. Step 3: Cross multiply
    135,071.81x = 186,398.38 × 74,646.65
  4. Step 4: Simplify right side
    135,071.81x = 13,914,014,632.43
  5. Step 5: Solve for x
    x = 13,914,014,632.43/135,071.81
  6. Step 6: Final answer
    x = 103,011.98

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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.