Home / 113,639.99-156,758.15-71,124.71

Finding the Fourth Proportional to 113,639.99, 156,758.15 and 71,124.71

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Solution

The fourth proportional to 113,639.99, 156,758.15 and 71,124.71 is: 98,111.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,639.99 : 156,758.15 = 71,124.71 : x
  2. Step 2: Convert to fraction form
    113,639.99/156,758.15 = 71,124.71/x
  3. Step 3: Cross multiply
    113,639.99x = 156,758.15 × 71,124.71
  4. Step 4: Simplify right side
    113,639.99x = 11,149,377,352.91
  5. Step 5: Solve for x
    x = 11,149,377,352.91/113,639.99
  6. Step 6: Final answer
    x = 98,111.39

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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.