Home / 99,880.36-137,833.86-57,437.80

Finding the Fourth Proportional to 99,880.36, 137,833.86 and 57,437.80

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Solution

The fourth proportional to 99,880.36, 137,833.86 and 57,437.80 is: 79,263.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,880.36 : 137,833.86 = 57,437.80 : x
  2. Step 2: Convert to fraction form
    99,880.36/137,833.86 = 57,437.80/x
  3. Step 3: Cross multiply
    99,880.36x = 137,833.86 × 57,437.80
  4. Step 4: Simplify right side
    99,880.36x = 7,916,873,683.91
  5. Step 5: Solve for x
    x = 7,916,873,683.91/99,880.36
  6. Step 6: Final answer
    x = 79,263.57

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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.