Home / 156,869.36-235,111.26-72,515.42

Finding the Fourth Proportional to 156,869.36, 235,111.26 and 72,515.42

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Solution

The fourth proportional to 156,869.36, 235,111.26 and 72,515.42 is: 108,684.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,869.36 : 235,111.26 = 72,515.42 : x
  2. Step 2: Convert to fraction form
    156,869.36/235,111.26 = 72,515.42/x
  3. Step 3: Cross multiply
    156,869.36x = 235,111.26 × 72,515.42
  4. Step 4: Simplify right side
    156,869.36x = 17,049,191,765.63
  5. Step 5: Solve for x
    x = 17,049,191,765.63/156,869.36
  6. Step 6: Final answer
    x = 108,684.01

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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.