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Finding the Fourth Proportional to 93,459.20, 140,188.80 and 89,830.40

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Solution

The fourth proportional to 93,459.20, 140,188.80 and 89,830.40 is: 134,745.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,459.20 : 140,188.80 = 89,830.40 : x
  2. Step 2: Convert to fraction form
    93,459.20/140,188.80 = 89,830.40/x
  3. Step 3: Cross multiply
    93,459.20x = 140,188.80 × 89,830.40
  4. Step 4: Simplify right side
    93,459.20x = 12,593,215,979.52
  5. Step 5: Solve for x
    x = 12,593,215,979.52/93,459.20
  6. Step 6: Final answer
    x = 134,745.60

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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.