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Finding the Fourth Proportional to 145,971, 218,927.33 and 40,790.88

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Solution

The fourth proportional to 145,971, 218,927.33 and 40,790.88 is: 61,178.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,971 : 218,927.33 = 40,790.88 : x
  2. Step 2: Convert to fraction form
    145,971/218,927.33 = 40,790.88/x
  3. Step 3: Cross multiply
    145,971x = 218,927.33 × 40,790.88
  4. Step 4: Simplify right side
    145,971x = 8,930,238,242.80
  5. Step 5: Solve for x
    x = 8,930,238,242.80/145,971
  6. Step 6: Final answer
    x = 61,178.17

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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.