Home / 213,064.08-294,064.20-128,189.04

Finding the Fourth Proportional to 213,064.08, 294,064.20 and 128,189.04

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Solution

The fourth proportional to 213,064.08, 294,064.20 and 128,189.04 is: 176,922.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,064.08 : 294,064.20 = 128,189.04 : x
  2. Step 2: Convert to fraction form
    213,064.08/294,064.20 = 128,189.04/x
  3. Step 3: Cross multiply
    213,064.08x = 294,064.20 × 128,189.04
  4. Step 4: Simplify right side
    213,064.08x = 37,695,807,496.37
  5. Step 5: Solve for x
    x = 37,695,807,496.37/213,064.08
  6. Step 6: Final answer
    x = 176,922.40

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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.