Home / 135,116.71-186,457.78-74,685.80

Finding the Fourth Proportional to 135,116.71, 186,457.78 and 74,685.80

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Solution

The fourth proportional to 135,116.71, 186,457.78 and 74,685.80 is: 103,064.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,116.71 : 186,457.78 = 74,685.80 : x
  2. Step 2: Convert to fraction form
    135,116.71/186,457.78 = 74,685.80/x
  3. Step 3: Cross multiply
    135,116.71x = 186,457.78 × 74,685.80
  4. Step 4: Simplify right side
    135,116.71x = 13,925,748,465.52
  5. Step 5: Solve for x
    x = 13,925,748,465.52/135,116.71
  6. Step 6: Final answer
    x = 103,064.59

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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.