Home / 89,730.40-134,595.60-68,735.20

Finding the Fourth Proportional to 89,730.40, 134,595.60 and 68,735.20

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Solution

The fourth proportional to 89,730.40, 134,595.60 and 68,735.20 is: 103,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,730.40 : 134,595.60 = 68,735.20 : x
  2. Step 2: Convert to fraction form
    89,730.40/134,595.60 = 68,735.20/x
  3. Step 3: Cross multiply
    89,730.40x = 134,595.60 × 68,735.20
  4. Step 4: Simplify right side
    89,730.40x = 9,251,455,485.12
  5. Step 5: Solve for x
    x = 9,251,455,485.12/89,730.40
  6. Step 6: Final answer
    x = 103,102.80

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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.