Home / 213,611.13-320,207.10-118,886.69

Finding the Fourth Proportional to 213,611.13, 320,207.10 and 118,886.69

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Solution

The fourth proportional to 213,611.13, 320,207.10 and 118,886.69 is: 178,213.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,611.13 : 320,207.10 = 118,886.69 : x
  2. Step 2: Convert to fraction form
    213,611.13/320,207.10 = 118,886.69/x
  3. Step 3: Cross multiply
    213,611.13x = 320,207.10 × 118,886.69
  4. Step 4: Simplify right side
    213,611.13x = 38,068,362,233.50
  5. Step 5: Solve for x
    x = 38,068,362,233.50/213,611.13
  6. Step 6: Final answer
    x = 178,213.38

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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.