Home / 120,955.40-181,433.10-76,632.20

Finding the Fourth Proportional to 120,955.40, 181,433.10 and 76,632.20

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Solution

The fourth proportional to 120,955.40, 181,433.10 and 76,632.20 is: 114,948.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,955.40 : 181,433.10 = 76,632.20 : x
  2. Step 2: Convert to fraction form
    120,955.40/181,433.10 = 76,632.20/x
  3. Step 3: Cross multiply
    120,955.40x = 181,433.10 × 76,632.20
  4. Step 4: Simplify right side
    120,955.40x = 13,903,617,605.82
  5. Step 5: Solve for x
    x = 13,903,617,605.82/120,955.40
  6. Step 6: Final answer
    x = 114,948.30

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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.