Home / 154,701.85-213,503.67-86,718.95

Finding the Fourth Proportional to 154,701.85, 213,503.67 and 86,718.95

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Solution

The fourth proportional to 154,701.85, 213,503.67 and 86,718.95 is: 119,680.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,701.85 : 213,503.67 = 86,718.95 : x
  2. Step 2: Convert to fraction form
    154,701.85/213,503.67 = 86,718.95/x
  3. Step 3: Cross multiply
    154,701.85x = 213,503.67 × 86,718.95
  4. Step 4: Simplify right side
    154,701.85x = 18,514,814,083.55
  5. Step 5: Solve for x
    x = 18,514,814,083.55/154,701.85
  6. Step 6: Final answer
    x = 119,680.62

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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.