Home / 155,407.32-214,446.24-87,413.40

Finding the Fourth Proportional to 155,407.32, 214,446.24 and 87,413.40

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Solution

The fourth proportional to 155,407.32, 214,446.24 and 87,413.40 is: 120,621.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,407.32 : 214,446.24 = 87,413.40 : x
  2. Step 2: Convert to fraction form
    155,407.32/214,446.24 = 87,413.40/x
  3. Step 3: Cross multiply
    155,407.32x = 214,446.24 × 87,413.40
  4. Step 4: Simplify right side
    155,407.32x = 18,745,474,955.62
  5. Step 5: Solve for x
    x = 18,745,474,955.62/155,407.32
  6. Step 6: Final answer
    x = 120,621.57

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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.