Home / 190,743.84-286,208.70-78,457.71

Finding the Fourth Proportional to 190,743.84, 286,208.70 and 78,457.71

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Solution

The fourth proportional to 190,743.84, 286,208.70 and 78,457.71 is: 117,724.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,743.84 : 286,208.70 = 78,457.71 : x
  2. Step 2: Convert to fraction form
    190,743.84/286,208.70 = 78,457.71/x
  3. Step 3: Cross multiply
    190,743.84x = 286,208.70 × 78,457.71
  4. Step 4: Simplify right side
    190,743.84x = 22,455,279,184.08
  5. Step 5: Solve for x
    x = 22,455,279,184.08/190,743.84
  6. Step 6: Final answer
    x = 117,724.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.