Home / 189,429.92-261,413.84-103,389.69

Finding the Fourth Proportional to 189,429.92, 261,413.84 and 103,389.69

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Solution

The fourth proportional to 189,429.92, 261,413.84 and 103,389.69 is: 142,678.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,429.92 : 261,413.84 = 103,389.69 : x
  2. Step 2: Convert to fraction form
    189,429.92/261,413.84 = 103,389.69/x
  3. Step 3: Cross multiply
    189,429.92x = 261,413.84 × 103,389.69
  4. Step 4: Simplify right side
    189,429.92x = 27,027,495,362.36
  5. Step 5: Solve for x
    x = 27,027,495,362.36/189,429.92
  6. Step 6: Final answer
    x = 142,678.07

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1.5x scale

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.