Home / 216,601.81-298,909.52-121,108.51

Finding the Fourth Proportional to 216,601.81, 298,909.52 and 121,108.51

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Solution

The fourth proportional to 216,601.81, 298,909.52 and 121,108.51 is: 167,129.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,601.81 : 298,909.52 = 121,108.51 : x
  2. Step 2: Convert to fraction form
    216,601.81/298,909.52 = 121,108.51/x
  3. Step 3: Cross multiply
    216,601.81x = 298,909.52 × 121,108.51
  4. Step 4: Simplify right side
    216,601.81x = 36,200,486,592.02
  5. Step 5: Solve for x
    x = 36,200,486,592.02/216,601.81
  6. Step 6: Final answer
    x = 167,129.20

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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.