Home / 99,555.59-137,385.65-57,120.77

Finding the Fourth Proportional to 99,555.59, 137,385.65 and 57,120.77

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Solution

The fourth proportional to 99,555.59, 137,385.65 and 57,120.77 is: 78,826.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,555.59 : 137,385.65 = 57,120.77 : x
  2. Step 2: Convert to fraction form
    99,555.59/137,385.65 = 57,120.77/x
  3. Step 3: Cross multiply
    99,555.59x = 137,385.65 × 57,120.77
  4. Step 4: Simplify right side
    99,555.59x = 7,847,573,829.35
  5. Step 5: Solve for x
    x = 7,847,573,829.35/99,555.59
  6. Step 6: Final answer
    x = 78,826.05

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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.