Home / 250,030.50-375,084.82-81,511.72

Finding the Fourth Proportional to 250,030.50, 375,084.82 and 81,511.72

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Solution

The fourth proportional to 250,030.50, 375,084.82 and 81,511.72 is: 122,280.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,030.50 : 375,084.82 = 81,511.72 : x
  2. Step 2: Convert to fraction form
    250,030.50/375,084.82 = 81,511.72/x
  3. Step 3: Cross multiply
    250,030.50x = 375,084.82 × 81,511.72
  4. Step 4: Simplify right side
    250,030.50x = 30,573,808,824.09
  5. Step 5: Solve for x
    x = 30,573,808,824.09/250,030.50
  6. Step 6: Final answer
    x = 122,280.32

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1.5x scale

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.