Home / 113,486.64-156,560.36-77,143.56

Finding the Fourth Proportional to 113,486.64, 156,560.36 and 77,143.56

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Solution

The fourth proportional to 113,486.64, 156,560.36 and 77,143.56 is: 106,423.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,486.64 : 156,560.36 = 77,143.56 : x
  2. Step 2: Convert to fraction form
    113,486.64/156,560.36 = 77,143.56/x
  3. Step 3: Cross multiply
    113,486.64x = 156,560.36 × 77,143.56
  4. Step 4: Simplify right side
    113,486.64x = 12,077,623,525.28
  5. Step 5: Solve for x
    x = 12,077,623,525.28/113,486.64
  6. Step 6: Final answer
    x = 106,423.31

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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.