Home / 268,112.79-402,176.48-81,124.29

Finding the Fourth Proportional to 268,112.79, 402,176.48 and 81,124.29

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Solution

The fourth proportional to 268,112.79, 402,176.48 and 81,124.29 is: 121,688.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,112.79 : 402,176.48 = 81,124.29 : x
  2. Step 2: Convert to fraction form
    268,112.79/402,176.48 = 81,124.29/x
  3. Step 3: Cross multiply
    268,112.79x = 402,176.48 × 81,124.29
  4. Step 4: Simplify right side
    268,112.79x = 32,626,280,989.08
  5. Step 5: Solve for x
    x = 32,626,280,989.08/268,112.79
  6. Step 6: Final answer
    x = 121,688.64

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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.