Home / 124,228.12-171,435-67,639.72

Finding the Fourth Proportional to 124,228.12, 171,435 and 67,639.72

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Solution

The fourth proportional to 124,228.12, 171,435 and 67,639.72 is: 93,342.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,228.12 : 171,435 = 67,639.72 : x
  2. Step 2: Convert to fraction form
    124,228.12/171,435 = 67,639.72/x
  3. Step 3: Cross multiply
    124,228.12x = 171,435 × 67,639.72
  4. Step 4: Simplify right side
    124,228.12x = 11,595,815,398.20
  5. Step 5: Solve for x
    x = 11,595,815,398.20/124,228.12
  6. Step 6: Final answer
    x = 93,342.92

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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.