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Finding the Fourth Proportional to 210,792.62, 316,189.47 and 86,133.62

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Solution

The fourth proportional to 210,792.62, 316,189.47 and 86,133.62 is: 129,200.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,792.62 : 316,189.47 = 86,133.62 : x
  2. Step 2: Convert to fraction form
    210,792.62/316,189.47 = 86,133.62/x
  3. Step 3: Cross multiply
    210,792.62x = 316,189.47 × 86,133.62
  4. Step 4: Simplify right side
    210,792.62x = 27,234,543,656.98
  5. Step 5: Solve for x
    x = 27,234,543,656.98/210,792.62
  6. Step 6: Final answer
    x = 129,200.65

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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.