Home / 130,881.42-180,611.44-79,979.27

Finding the Fourth Proportional to 130,881.42, 180,611.44 and 79,979.27

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Solution

The fourth proportional to 130,881.42, 180,611.44 and 79,979.27 is: 110,368.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,881.42 : 180,611.44 = 79,979.27 : x
  2. Step 2: Convert to fraction form
    130,881.42/180,611.44 = 79,979.27/x
  3. Step 3: Cross multiply
    130,881.42x = 180,611.44 × 79,979.27
  4. Step 4: Simplify right side
    130,881.42x = 14,445,170,021.84
  5. Step 5: Solve for x
    x = 14,445,170,021.84/130,881.42
  6. Step 6: Final answer
    x = 110,368.38

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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.