Home / 99,572.70-137,411.54-57,135.18

Finding the Fourth Proportional to 99,572.70, 137,411.54 and 57,135.18

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Solution

The fourth proportional to 99,572.70, 137,411.54 and 57,135.18 is: 78,847.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,572.70 : 137,411.54 = 57,135.18 : x
  2. Step 2: Convert to fraction form
    99,572.70/137,411.54 = 57,135.18/x
  3. Step 3: Cross multiply
    99,572.70x = 137,411.54 × 57,135.18
  4. Step 4: Simplify right side
    99,572.70x = 7,851,033,071.98
  5. Step 5: Solve for x
    x = 7,851,033,071.98/99,572.70
  6. Step 6: Final answer
    x = 78,847.24

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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.