Home / 99,789.51-137,706.11-59,482.50

Finding the Fourth Proportional to 99,789.51, 137,706.11 and 59,482.50

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Solution

The fourth proportional to 99,789.51, 137,706.11 and 59,482.50 is: 82,083.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,789.51 : 137,706.11 = 59,482.50 : x
  2. Step 2: Convert to fraction form
    99,789.51/137,706.11 = 59,482.50/x
  3. Step 3: Cross multiply
    99,789.51x = 137,706.11 × 59,482.50
  4. Step 4: Simplify right side
    99,789.51x = 8,191,103,390.66
  5. Step 5: Solve for x
    x = 8,191,103,390.66/99,789.51
  6. Step 6: Final answer
    x = 82,083.81

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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.