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Finding the Fourth Proportional to 145,047.30, 217,581.42 and 60,722.65

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Solution

The fourth proportional to 145,047.30, 217,581.42 and 60,722.65 is: 91,088.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,047.30 : 217,581.42 = 60,722.65 : x
  2. Step 2: Convert to fraction form
    145,047.30/217,581.42 = 60,722.65/x
  3. Step 3: Cross multiply
    145,047.30x = 217,581.42 × 60,722.65
  4. Step 4: Simplify right side
    145,047.30x = 13,212,120,413.16
  5. Step 5: Solve for x
    x = 13,212,120,413.16/145,047.30
  6. Step 6: Final answer
    x = 91,088.36

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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.