Home / 78,756.96-118,155.40-26,166.72

Finding the Fourth Proportional to 78,756.96, 118,155.40 and 26,166.72

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Solution

The fourth proportional to 78,756.96, 118,155.40 and 26,166.72 is: 39,256.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,756.96 : 118,155.40 = 26,166.72 : x
  2. Step 2: Convert to fraction form
    78,756.96/118,155.40 = 26,166.72/x
  3. Step 3: Cross multiply
    78,756.96x = 118,155.40 × 26,166.72
  4. Step 4: Simplify right side
    78,756.96x = 3,091,739,268.29
  5. Step 5: Solve for x
    x = 3,091,739,268.29/78,756.96
  6. Step 6: Final answer
    x = 39,256.71

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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.