Home / 141,803.19-195,689.71-78,143.26

Finding the Fourth Proportional to 141,803.19, 195,689.71 and 78,143.26

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Solution

The fourth proportional to 141,803.19, 195,689.71 and 78,143.26 is: 107,838.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,803.19 : 195,689.71 = 78,143.26 : x
  2. Step 2: Convert to fraction form
    141,803.19/195,689.71 = 78,143.26/x
  3. Step 3: Cross multiply
    141,803.19x = 195,689.71 × 78,143.26
  4. Step 4: Simplify right side
    141,803.19x = 15,291,831,887.85
  5. Step 5: Solve for x
    x = 15,291,831,887.85/141,803.19
  6. Step 6: Final answer
    x = 107,838.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.