Home / 218,130.68-326,612.48-128,099.18

Finding the Fourth Proportional to 218,130.68, 326,612.48 and 128,099.18

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Solution

The fourth proportional to 218,130.68, 326,612.48 and 128,099.18 is: 191,806.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,130.68 : 326,612.48 = 128,099.18 : x
  2. Step 2: Convert to fraction form
    218,130.68/326,612.48 = 128,099.18/x
  3. Step 3: Cross multiply
    218,130.68x = 326,612.48 × 128,099.18
  4. Step 4: Simplify right side
    218,130.68x = 41,838,790,865.77
  5. Step 5: Solve for x
    x = 41,838,790,865.77/218,130.68
  6. Step 6: Final answer
    x = 191,806.08

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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.