Home / 90,246.78-124,465.28-67,639.68

Finding the Fourth Proportional to 90,246.78, 124,465.28 and 67,639.68

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Solution

The fourth proportional to 90,246.78, 124,465.28 and 67,639.68 is: 93,286.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,246.78 : 124,465.28 = 67,639.68 : x
  2. Step 2: Convert to fraction form
    90,246.78/124,465.28 = 67,639.68/x
  3. Step 3: Cross multiply
    90,246.78x = 124,465.28 × 67,639.68
  4. Step 4: Simplify right side
    90,246.78x = 8,418,791,372.11
  5. Step 5: Solve for x
    x = 8,418,791,372.11/90,246.78
  6. Step 6: Final answer
    x = 93,286.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.