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Finding the Fourth Proportional to 152,670.54, 210,685.38 and 85,602.54

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Solution

The fourth proportional to 152,670.54, 210,685.38 and 85,602.54 is: 118,131.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,670.54 : 210,685.38 = 85,602.54 : x
  2. Step 2: Convert to fraction form
    152,670.54/210,685.38 = 85,602.54/x
  3. Step 3: Cross multiply
    152,670.54x = 210,685.38 × 85,602.54
  4. Step 4: Simplify right side
    152,670.54x = 18,035,203,668.87
  5. Step 5: Solve for x
    x = 18,035,203,668.87/152,670.54
  6. Step 6: Final answer
    x = 118,131.52

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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.