Home / 103,730.19-142,846.47-90,112.02

Finding the Fourth Proportional to 103,730.19, 142,846.47 and 90,112.02

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Solution

The fourth proportional to 103,730.19, 142,846.47 and 90,112.02 is: 124,092.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,730.19 : 142,846.47 = 90,112.02 : x
  2. Step 2: Convert to fraction form
    103,730.19/142,846.47 = 90,112.02/x
  3. Step 3: Cross multiply
    103,730.19x = 142,846.47 × 90,112.02
  4. Step 4: Simplify right side
    103,730.19x = 12,872,183,961.57
  5. Step 5: Solve for x
    x = 12,872,183,961.57/103,730.19
  6. Step 6: Final answer
    x = 124,092.94

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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.