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Finding the Fourth Proportional to 108,280.40, 162,420.60 and 98,603.60

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Solution

The fourth proportional to 108,280.40, 162,420.60 and 98,603.60 is: 147,905.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,280.40 : 162,420.60 = 98,603.60 : x
  2. Step 2: Convert to fraction form
    108,280.40/162,420.60 = 98,603.60/x
  3. Step 3: Cross multiply
    108,280.40x = 162,420.60 × 98,603.60
  4. Step 4: Simplify right side
    108,280.40x = 16,015,255,874.16
  5. Step 5: Solve for x
    x = 16,015,255,874.16/108,280.40
  6. Step 6: Final answer
    x = 147,905.40

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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.