Home / 99,260.60-136,985.70-56,818.12

Finding the Fourth Proportional to 99,260.60, 136,985.70 and 56,818.12

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Solution

The fourth proportional to 99,260.60, 136,985.70 and 56,818.12 is: 78,412.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,260.60 : 136,985.70 = 56,818.12 : x
  2. Step 2: Convert to fraction form
    99,260.60/136,985.70 = 56,818.12/x
  3. Step 3: Cross multiply
    99,260.60x = 136,985.70 × 56,818.12
  4. Step 4: Simplify right side
    99,260.60x = 7,783,269,940.88
  5. Step 5: Solve for x
    x = 7,783,269,940.88/99,260.60
  6. Step 6: Final answer
    x = 78,412.48

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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.