Home / 85,834.20-128,492.10-75,466.20

Finding the Fourth Proportional to 85,834.20, 128,492.10 and 75,466.20

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Solution

The fourth proportional to 85,834.20, 128,492.10 and 75,466.20 is: 112,971.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,834.20 : 128,492.10 = 75,466.20 : x
  2. Step 2: Convert to fraction form
    85,834.20/128,492.10 = 75,466.20/x
  3. Step 3: Cross multiply
    85,834.20x = 128,492.10 × 75,466.20
  4. Step 4: Simplify right side
    85,834.20x = 9,696,810,517.02
  5. Step 5: Solve for x
    x = 9,696,810,517.02/85,834.20
  6. Step 6: Final answer
    x = 112,971.41

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1.5x scale

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.