Home / 89,941.30-134,911.95-86,101.90

Finding the Fourth Proportional to 89,941.30, 134,911.95 and 86,101.90

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Solution

The fourth proportional to 89,941.30, 134,911.95 and 86,101.90 is: 129,152.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,941.30 : 134,911.95 = 86,101.90 : x
  2. Step 2: Convert to fraction form
    89,941.30/134,911.95 = 86,101.90/x
  3. Step 3: Cross multiply
    89,941.30x = 134,911.95 × 86,101.90
  4. Step 4: Simplify right side
    89,941.30x = 11,616,175,227.71
  5. Step 5: Solve for x
    x = 11,616,175,227.71/89,941.30
  6. Step 6: Final answer
    x = 129,152.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.