Home / 103,430.76-142,725.70-58,105.18

Finding the Fourth Proportional to 103,430.76, 142,725.70 and 58,105.18

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Solution

The fourth proportional to 103,430.76, 142,725.70 and 58,105.18 is: 80,180.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,430.76 : 142,725.70 = 58,105.18 : x
  2. Step 2: Convert to fraction form
    103,430.76/142,725.70 = 58,105.18/x
  3. Step 3: Cross multiply
    103,430.76x = 142,725.70 × 58,105.18
  4. Step 4: Simplify right side
    103,430.76x = 8,293,102,413.32
  5. Step 5: Solve for x
    x = 8,293,102,413.32/103,430.76
  6. Step 6: Final answer
    x = 80,180.24

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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.