Home / 190,876.71-286,315.07-72,520.05

Finding the Fourth Proportional to 190,876.71, 286,315.07 and 72,520.05

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Solution

The fourth proportional to 190,876.71, 286,315.07 and 72,520.05 is: 108,780.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,876.71 : 286,315.07 = 72,520.05 : x
  2. Step 2: Convert to fraction form
    190,876.71/286,315.07 = 72,520.05/x
  3. Step 3: Cross multiply
    190,876.71x = 286,315.07 × 72,520.05
  4. Step 4: Simplify right side
    190,876.71x = 20,763,582,829.55
  5. Step 5: Solve for x
    x = 20,763,582,829.55/190,876.71
  6. Step 6: Final answer
    x = 108,780.08

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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.