Home / 135,116.34-186,457.26-74,685.42

Finding the Fourth Proportional to 135,116.34, 186,457.26 and 74,685.42

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Solution

The fourth proportional to 135,116.34, 186,457.26 and 74,685.42 is: 103,064.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,116.34 : 186,457.26 = 74,685.42 : x
  2. Step 2: Convert to fraction form
    135,116.34/186,457.26 = 74,685.42/x
  3. Step 3: Cross multiply
    135,116.34x = 186,457.26 × 74,685.42
  4. Step 4: Simplify right side
    135,116.34x = 13,925,639,474.36
  5. Step 5: Solve for x
    x = 13,925,639,474.36/135,116.34
  6. Step 6: Final answer
    x = 103,064.07

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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.