Home / 89,840.10-134,760.15-85,466.10

Finding the Fourth Proportional to 89,840.10, 134,760.15 and 85,466.10

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Solution

The fourth proportional to 89,840.10, 134,760.15 and 85,466.10 is: 128,199.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,840.10 : 134,760.15 = 85,466.10 : x
  2. Step 2: Convert to fraction form
    89,840.10/134,760.15 = 85,466.10/x
  3. Step 3: Cross multiply
    89,840.10x = 134,760.15 × 85,466.10
  4. Step 4: Simplify right side
    89,840.10x = 11,517,424,455.92
  5. Step 5: Solve for x
    x = 11,517,424,455.92/89,840.10
  6. Step 6: Final answer
    x = 128,199.15

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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.