Home / 78,771.03-118,155.94-19,606.31

Finding the Fourth Proportional to 78,771.03, 118,155.94 and 19,606.31

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Solution

The fourth proportional to 78,771.03, 118,155.94 and 19,606.31 is: 29,409.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,771.03 : 118,155.94 = 19,606.31 : x
  2. Step 2: Convert to fraction form
    78,771.03/118,155.94 = 19,606.31/x
  3. Step 3: Cross multiply
    78,771.03x = 118,155.94 × 19,606.31
  4. Step 4: Simplify right side
    78,771.03x = 2,316,601,348.19
  5. Step 5: Solve for x
    x = 2,316,601,348.19/78,771.03
  6. Step 6: Final answer
    x = 29,409.31

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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.