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Finding the Fourth Proportional to 120,969.94, 181,484.67 and 42,084.85

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Solution

The fourth proportional to 120,969.94, 181,484.67 and 42,084.85 is: 63,137.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,969.94 : 181,484.67 = 42,084.85 : x
  2. Step 2: Convert to fraction form
    120,969.94/181,484.67 = 42,084.85/x
  3. Step 3: Cross multiply
    120,969.94x = 181,484.67 × 42,084.85
  4. Step 4: Simplify right side
    120,969.94x = 7,637,754,206.83
  5. Step 5: Solve for x
    x = 7,637,754,206.83/120,969.94
  6. Step 6: Final answer
    x = 63,137.62

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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.