Home / 99,918.51-137,883.56-56,903.87

Finding the Fourth Proportional to 99,918.51, 137,883.56 and 56,903.87

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Solution

The fourth proportional to 99,918.51, 137,883.56 and 56,903.87 is: 78,525.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,918.51 : 137,883.56 = 56,903.87 : x
  2. Step 2: Convert to fraction form
    99,918.51/137,883.56 = 56,903.87/x
  3. Step 3: Cross multiply
    99,918.51x = 137,883.56 × 56,903.87
  4. Step 4: Simplify right side
    99,918.51x = 7,846,107,199.44
  5. Step 5: Solve for x
    x = 7,846,107,199.44/99,918.51
  6. Step 6: Final answer
    x = 78,525.06

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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.