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Finding the Fourth Proportional to 140,086.51, 210,129.14 and 60,117.64

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Solution

The fourth proportional to 140,086.51, 210,129.14 and 60,117.64 is: 90,176.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,086.51 : 210,129.14 = 60,117.64 : x
  2. Step 2: Convert to fraction form
    140,086.51/210,129.14 = 60,117.64/x
  3. Step 3: Cross multiply
    140,086.51x = 210,129.14 × 60,117.64
  4. Step 4: Simplify right side
    140,086.51x = 12,632,467,617.00
  5. Step 5: Solve for x
    x = 12,632,467,617.00/140,086.51
  6. Step 6: Final answer
    x = 90,176.19

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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.