Home / 90,018.30-135,027.45-89,435.10

Finding the Fourth Proportional to 90,018.30, 135,027.45 and 89,435.10

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Solution

The fourth proportional to 90,018.30, 135,027.45 and 89,435.10 is: 134,152.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,018.30 : 135,027.45 = 89,435.10 : x
  2. Step 2: Convert to fraction form
    90,018.30/135,027.45 = 89,435.10/x
  3. Step 3: Cross multiply
    90,018.30x = 135,027.45 × 89,435.10
  4. Step 4: Simplify right side
    90,018.30x = 12,076,193,493.50
  5. Step 5: Solve for x
    x = 12,076,193,493.50/90,018.30
  6. Step 6: Final answer
    x = 134,152.65

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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.