Home / 99,903.22-137,723.43-61,637.20

Finding the Fourth Proportional to 99,903.22, 137,723.43 and 61,637.20

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Solution

The fourth proportional to 99,903.22, 137,723.43 and 61,637.20 is: 84,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,903.22 : 137,723.43 = 61,637.20 : x
  2. Step 2: Convert to fraction form
    99,903.22/137,723.43 = 61,637.20/x
  3. Step 3: Cross multiply
    99,903.22x = 137,723.43 × 61,637.20
  4. Step 4: Simplify right side
    99,903.22x = 8,488,886,599.60
  5. Step 5: Solve for x
    x = 8,488,886,599.60/99,903.22
  6. Step 6: Final answer
    x = 84,971.10

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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.