Home / 135,298.55-186,709.21-74,869.16

Finding the Fourth Proportional to 135,298.55, 186,709.21 and 74,869.16

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Solution

The fourth proportional to 135,298.55, 186,709.21 and 74,869.16 is: 103,317.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,298.55 : 186,709.21 = 74,869.16 : x
  2. Step 2: Convert to fraction form
    135,298.55/186,709.21 = 74,869.16/x
  3. Step 3: Cross multiply
    135,298.55x = 186,709.21 × 74,869.16
  4. Step 4: Simplify right side
    135,298.55x = 13,978,760,875.84
  5. Step 5: Solve for x
    x = 13,978,760,875.84/135,298.55
  6. Step 6: Final answer
    x = 103,317.89

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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.