Home / 156,971.65-235,457.48-137,288.65

Finding the Fourth Proportional to 156,971.65, 235,457.48 and 137,288.65

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Solution

The fourth proportional to 156,971.65, 235,457.48 and 137,288.65 is: 205,932.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,971.65 : 235,457.48 = 137,288.65 : x
  2. Step 2: Convert to fraction form
    156,971.65/235,457.48 = 137,288.65/x
  3. Step 3: Cross multiply
    156,971.65x = 235,457.48 × 137,288.65
  4. Step 4: Simplify right side
    156,971.65x = 32,325,639,561.60
  5. Step 5: Solve for x
    x = 32,325,639,561.60/156,971.65
  6. Step 6: Final answer
    x = 205,932.98

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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.