Home / 109,678.48-151,366.91-66,648.49

Finding the Fourth Proportional to 109,678.48, 151,366.91 and 66,648.49

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Solution

The fourth proportional to 109,678.48, 151,366.91 and 66,648.49 is: 91,981.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,678.48 : 151,366.91 = 66,648.49 : x
  2. Step 2: Convert to fraction form
    109,678.48/151,366.91 = 66,648.49/x
  3. Step 3: Cross multiply
    109,678.48x = 151,366.91 × 66,648.49
  4. Step 4: Simplify right side
    109,678.48x = 10,088,375,275.81
  5. Step 5: Solve for x
    x = 10,088,375,275.81/109,678.48
  6. Step 6: Final answer
    x = 91,981.36

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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.