Home / 190,811.30-286,359.15-72,713.30

Finding the Fourth Proportional to 190,811.30, 286,359.15 and 72,713.30

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Solution

The fourth proportional to 190,811.30, 286,359.15 and 72,713.30 is: 109,124.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,811.30 : 286,359.15 = 72,713.30 : x
  2. Step 2: Convert to fraction form
    190,811.30/286,359.15 = 72,713.30/x
  3. Step 3: Cross multiply
    190,811.30x = 286,359.15 × 72,713.30
  4. Step 4: Simplify right side
    190,811.30x = 20,822,118,781.70
  5. Step 5: Solve for x
    x = 20,822,118,781.70/190,811.30
  6. Step 6: Final answer
    x = 109,124.14

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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.