Home / 99,984.19-137,980.35-59,690.42

Finding the Fourth Proportional to 99,984.19, 137,980.35 and 59,690.42

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Solution

The fourth proportional to 99,984.19, 137,980.35 and 59,690.42 is: 82,374.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,984.19 : 137,980.35 = 59,690.42 : x
  2. Step 2: Convert to fraction form
    99,984.19/137,980.35 = 59,690.42/x
  3. Step 3: Cross multiply
    99,984.19x = 137,980.35 × 59,690.42
  4. Step 4: Simplify right side
    99,984.19x = 8,236,105,043.25
  5. Step 5: Solve for x
    x = 8,236,105,043.25/99,984.19
  6. Step 6: Final answer
    x = 82,374.07

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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.