Home / 165,440.90-248,161.35-128,116.10

Finding the Fourth Proportional to 165,440.90, 248,161.35 and 128,116.10

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Solution

The fourth proportional to 165,440.90, 248,161.35 and 128,116.10 is: 192,174.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,440.90 : 248,161.35 = 128,116.10 : x
  2. Step 2: Convert to fraction form
    165,440.90/248,161.35 = 128,116.10/x
  3. Step 3: Cross multiply
    165,440.90x = 248,161.35 × 128,116.10
  4. Step 4: Simplify right side
    165,440.90x = 31,793,464,332.74
  5. Step 5: Solve for x
    x = 31,793,464,332.74/165,440.90
  6. Step 6: Final answer
    x = 192,174.15

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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.