Home / 105,160.28-145,120.44-57,413.63

Finding the Fourth Proportional to 105,160.28, 145,120.44 and 57,413.63

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Solution

The fourth proportional to 105,160.28, 145,120.44 and 57,413.63 is: 79,230.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,160.28 : 145,120.44 = 57,413.63 : x
  2. Step 2: Convert to fraction form
    105,160.28/145,120.44 = 57,413.63/x
  3. Step 3: Cross multiply
    105,160.28x = 145,120.44 × 57,413.63
  4. Step 4: Simplify right side
    105,160.28x = 8,331,890,741.26
  5. Step 5: Solve for x
    x = 8,331,890,741.26/105,160.28
  6. Step 6: Final answer
    x = 79,230.40

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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.