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Finding the Fourth Proportional to 268,111.76, 402,154.88 and 90,625.77

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Solution

The fourth proportional to 268,111.76, 402,154.88 and 90,625.77 is: 135,934.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    268,111.76 : 402,154.88 = 90,625.77 : x
  2. Step 2: Convert to fraction form
    268,111.76/402,154.88 = 90,625.77/x
  3. Step 3: Cross multiply
    268,111.76x = 402,154.88 × 90,625.77
  4. Step 4: Simplify right side
    268,111.76x = 36,445,595,206.13
  5. Step 5: Solve for x
    x = 36,445,595,206.13/268,111.76
  6. Step 6: Final answer
    x = 135,934.34

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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.