Home / 109,979.60-164,969.40-70,613.60

Finding the Fourth Proportional to 109,979.60, 164,969.40 and 70,613.60

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Solution

The fourth proportional to 109,979.60, 164,969.40 and 70,613.60 is: 105,920.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,979.60 : 164,969.40 = 70,613.60 : x
  2. Step 2: Convert to fraction form
    109,979.60/164,969.40 = 70,613.60/x
  3. Step 3: Cross multiply
    109,979.60x = 164,969.40 × 70,613.60
  4. Step 4: Simplify right side
    109,979.60x = 11,649,083,223.84
  5. Step 5: Solve for x
    x = 11,649,083,223.84/109,979.60
  6. Step 6: Final answer
    x = 105,920.40

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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.