Home / 191,137.48-286,589.58-78,782.92

Finding the Fourth Proportional to 191,137.48, 286,589.58 and 78,782.92

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Solution

The fourth proportional to 191,137.48, 286,589.58 and 78,782.92 is: 118,126.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,137.48 : 286,589.58 = 78,782.92 : x
  2. Step 2: Convert to fraction form
    191,137.48/286,589.58 = 78,782.92/x
  3. Step 3: Cross multiply
    191,137.48x = 286,589.58 × 78,782.92
  4. Step 4: Simplify right side
    191,137.48x = 22,578,363,953.97
  5. Step 5: Solve for x
    x = 22,578,363,953.97/191,137.48
  6. Step 6: Final answer
    x = 118,126.30

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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.