Home / 130,413.60-195,685.20-51,530.40

Finding the Fourth Proportional to 130,413.60, 195,685.20 and 51,530.40

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Solution

The fourth proportional to 130,413.60, 195,685.20 and 51,530.40 is: 77,321.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,413.60 : 195,685.20 = 51,530.40 : x
  2. Step 2: Convert to fraction form
    130,413.60/195,685.20 = 51,530.40/x
  3. Step 3: Cross multiply
    130,413.60x = 195,685.20 × 51,530.40
  4. Step 4: Simplify right side
    130,413.60x = 10,083,736,630.08
  5. Step 5: Solve for x
    x = 10,083,736,630.08/130,413.60
  6. Step 6: Final answer
    x = 77,321.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.