Home / 118,755.06-178,138.08-66,124.86

Finding the Fourth Proportional to 118,755.06, 178,138.08 and 66,124.86

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Solution

The fourth proportional to 118,755.06, 178,138.08 and 66,124.86 is: 99,190.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,755.06 : 178,138.08 = 66,124.86 : x
  2. Step 2: Convert to fraction form
    118,755.06/178,138.08 = 66,124.86/x
  3. Step 3: Cross multiply
    118,755.06x = 178,138.08 × 66,124.86
  4. Step 4: Simplify right side
    118,755.06x = 11,779,355,600.67
  5. Step 5: Solve for x
    x = 11,779,355,600.67/118,755.06
  6. Step 6: Final answer
    x = 99,190.35

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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.