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Finding the Fourth Proportional to 121,278.70, 181,885.65 and 37,038.70

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Solution

The fourth proportional to 121,278.70, 181,885.65 and 37,038.70 is: 55,548.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,278.70 : 181,885.65 = 37,038.70 : x
  2. Step 2: Convert to fraction form
    121,278.70/181,885.65 = 37,038.70/x
  3. Step 3: Cross multiply
    121,278.70x = 181,885.65 × 37,038.70
  4. Step 4: Simplify right side
    121,278.70x = 6,736,808,024.66
  5. Step 5: Solve for x
    x = 6,736,808,024.66/121,278.70
  6. Step 6: Final answer
    x = 55,548.15

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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.