Home / 78,105.04-117,156.40-18,941.22

Finding the Fourth Proportional to 78,105.04, 117,156.40 and 18,941.22

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Solution

The fourth proportional to 78,105.04, 117,156.40 and 18,941.22 is: 28,411.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,105.04 : 117,156.40 = 18,941.22 : x
  2. Step 2: Convert to fraction form
    78,105.04/117,156.40 = 18,941.22/x
  3. Step 3: Cross multiply
    78,105.04x = 117,156.40 × 18,941.22
  4. Step 4: Simplify right side
    78,105.04x = 2,219,085,099.45
  5. Step 5: Solve for x
    x = 2,219,085,099.45/78,105.04
  6. Step 6: Final answer
    x = 28,411.55

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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.