Home / 99,737.89-137,643.56-57,299.16

Finding the Fourth Proportional to 99,737.89, 137,643.56 and 57,299.16

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Solution

The fourth proportional to 99,737.89, 137,643.56 and 57,299.16 is: 79,075.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,737.89 : 137,643.56 = 57,299.16 : x
  2. Step 2: Convert to fraction form
    99,737.89/137,643.56 = 57,299.16/x
  3. Step 3: Cross multiply
    99,737.89x = 137,643.56 × 57,299.16
  4. Step 4: Simplify right side
    99,737.89x = 7,886,860,367.41
  5. Step 5: Solve for x
    x = 7,886,860,367.41/99,737.89
  6. Step 6: Final answer
    x = 79,075.87

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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.