Home / 109,626.10-164,439.15-87,318.70

Finding the Fourth Proportional to 109,626.10, 164,439.15 and 87,318.70

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Solution

The fourth proportional to 109,626.10, 164,439.15 and 87,318.70 is: 130,978.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,626.10 : 164,439.15 = 87,318.70 : x
  2. Step 2: Convert to fraction form
    109,626.10/164,439.15 = 87,318.70/x
  3. Step 3: Cross multiply
    109,626.10x = 164,439.15 × 87,318.70
  4. Step 4: Simplify right side
    109,626.10x = 14,358,612,807.11
  5. Step 5: Solve for x
    x = 14,358,612,807.11/109,626.10
  6. Step 6: Final answer
    x = 130,978.05

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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.