Home / 145,206.40-217,809.60-109,724.80

Finding the Fourth Proportional to 145,206.40, 217,809.60 and 109,724.80

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Solution

The fourth proportional to 145,206.40, 217,809.60 and 109,724.80 is: 164,587.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,206.40 : 217,809.60 = 109,724.80 : x
  2. Step 2: Convert to fraction form
    145,206.40/217,809.60 = 109,724.80/x
  3. Step 3: Cross multiply
    145,206.40x = 217,809.60 × 109,724.80
  4. Step 4: Simplify right side
    145,206.40x = 23,899,114,798.08
  5. Step 5: Solve for x
    x = 23,899,114,798.08/145,206.40
  6. Step 6: Final answer
    x = 164,587.20

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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.