Home / 105,072.98-145,001.20-57,327.38

Finding the Fourth Proportional to 105,072.98, 145,001.20 and 57,327.38

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Solution

The fourth proportional to 105,072.98, 145,001.20 and 57,327.38 is: 79,112.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,072.98 : 145,001.20 = 57,327.38 : x
  2. Step 2: Convert to fraction form
    105,072.98/145,001.20 = 57,327.38/x
  3. Step 3: Cross multiply
    105,072.98x = 145,001.20 × 57,327.38
  4. Step 4: Simplify right side
    105,072.98x = 8,312,538,892.86
  5. Step 5: Solve for x
    x = 8,312,538,892.86/105,072.98
  6. Step 6: Final answer
    x = 79,112.05

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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.