Home / 216,633.68-298,962.64-121,140.16

Finding the Fourth Proportional to 216,633.68, 298,962.64 and 121,140.16

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Solution

The fourth proportional to 216,633.68, 298,962.64 and 121,140.16 is: 167,177.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,633.68 : 298,962.64 = 121,140.16 : x
  2. Step 2: Convert to fraction form
    216,633.68/298,962.64 = 121,140.16/x
  3. Step 3: Cross multiply
    216,633.68x = 298,962.64 × 121,140.16
  4. Step 4: Simplify right side
    216,633.68x = 36,216,382,043.62
  5. Step 5: Solve for x
    x = 36,216,382,043.62/216,633.68
  6. Step 6: Final answer
    x = 167,177.98

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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.