Home / 155,413.34-214,470.08-87,430.36

Finding the Fourth Proportional to 155,413.34, 214,470.08 and 87,430.36

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Solution

The fourth proportional to 155,413.34, 214,470.08 and 87,430.36 is: 120,653.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,413.34 : 214,470.08 = 87,430.36 : x
  2. Step 2: Convert to fraction form
    155,413.34/214,470.08 = 87,430.36/x
  3. Step 3: Cross multiply
    155,413.34x = 214,470.08 × 87,430.36
  4. Step 4: Simplify right side
    155,413.34x = 18,751,196,303.63
  5. Step 5: Solve for x
    x = 18,751,196,303.63/155,413.34
  6. Step 6: Final answer
    x = 120,653.71

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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.