Home / 135,219.51-186,599.43-74,788.65

Finding the Fourth Proportional to 135,219.51, 186,599.43 and 74,788.65

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Solution

The fourth proportional to 135,219.51, 186,599.43 and 74,788.65 is: 103,206.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,219.51 : 186,599.43 = 74,788.65 : x
  2. Step 2: Convert to fraction form
    135,219.51/186,599.43 = 74,788.65/x
  3. Step 3: Cross multiply
    135,219.51x = 186,599.43 × 74,788.65
  4. Step 4: Simplify right side
    135,219.51x = 13,955,519,460.47
  5. Step 5: Solve for x
    x = 13,955,519,460.47/135,219.51
  6. Step 6: Final answer
    x = 103,206.40

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1.5x scale

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.