Home / 97,705.20-146,557.80-85,652.40

Finding the Fourth Proportional to 97,705.20, 146,557.80 and 85,652.40

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Solution

The fourth proportional to 97,705.20, 146,557.80 and 85,652.40 is: 128,478.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,705.20 : 146,557.80 = 85,652.40 : x
  2. Step 2: Convert to fraction form
    97,705.20/146,557.80 = 85,652.40/x
  3. Step 3: Cross multiply
    97,705.20x = 146,557.80 × 85,652.40
  4. Step 4: Simplify right side
    97,705.20x = 12,553,027,308.72
  5. Step 5: Solve for x
    x = 12,553,027,308.72/97,705.20
  6. Step 6: Final answer
    x = 128,478.60

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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.