Home / 112,508.29-155,137.73-72,206.74

Finding the Fourth Proportional to 112,508.29, 155,137.73 and 72,206.74

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Solution

The fourth proportional to 112,508.29, 155,137.73 and 72,206.74 is: 99,565.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,508.29 : 155,137.73 = 72,206.74 : x
  2. Step 2: Convert to fraction form
    112,508.29/155,137.73 = 72,206.74/x
  3. Step 3: Cross multiply
    112,508.29x = 155,137.73 × 72,206.74
  4. Step 4: Simplify right side
    112,508.29x = 11,201,989,973.35
  5. Step 5: Solve for x
    x = 11,201,989,973.35/112,508.29
  6. Step 6: Final answer
    x = 99,565.91

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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.