Home / 196,120.76-270,703.78-128,148.08

Finding the Fourth Proportional to 196,120.76, 270,703.78 and 128,148.08

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Solution

The fourth proportional to 196,120.76, 270,703.78 and 128,148.08 is: 176,881.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,120.76 : 270,703.78 = 128,148.08 : x
  2. Step 2: Convert to fraction form
    196,120.76/270,703.78 = 128,148.08/x
  3. Step 3: Cross multiply
    196,120.76x = 270,703.78 × 128,148.08
  4. Step 4: Simplify right side
    196,120.76x = 34,690,169,655.74
  5. Step 5: Solve for x
    x = 34,690,169,655.74/196,120.76
  6. Step 6: Final answer
    x = 176,881.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.