Home / 185,313.50-255,733.55-100,430.57

Finding the Fourth Proportional to 185,313.50, 255,733.55 and 100,430.57

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Solution

The fourth proportional to 185,313.50, 255,733.55 and 100,430.57 is: 138,594.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,313.50 : 255,733.55 = 100,430.57 : x
  2. Step 2: Convert to fraction form
    185,313.50/255,733.55 = 100,430.57/x
  3. Step 3: Cross multiply
    185,313.50x = 255,733.55 × 100,430.57
  4. Step 4: Simplify right side
    185,313.50x = 25,683,464,413.80
  5. Step 5: Solve for x
    x = 25,683,464,413.80/185,313.50
  6. Step 6: Final answer
    x = 138,594.68

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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.