Home / 125,878.02-173,766.09-90,005.70

Finding the Fourth Proportional to 125,878.02, 173,766.09 and 90,005.70

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Solution

The fourth proportional to 125,878.02, 173,766.09 and 90,005.70 is: 124,246.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,878.02 : 173,766.09 = 90,005.70 : x
  2. Step 2: Convert to fraction form
    125,878.02/173,766.09 = 90,005.70/x
  3. Step 3: Cross multiply
    125,878.02x = 173,766.09 × 90,005.70
  4. Step 4: Simplify right side
    125,878.02x = 15,639,938,566.71
  5. Step 5: Solve for x
    x = 15,639,938,566.71/125,878.02
  6. Step 6: Final answer
    x = 124,246.78

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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.