Home / 120,312.09-180,366.66-75,840.84

Finding the Fourth Proportional to 120,312.09, 180,366.66 and 75,840.84

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Solution

The fourth proportional to 120,312.09, 180,366.66 and 75,840.84 is: 113,697.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,312.09 : 180,366.66 = 75,840.84 : x
  2. Step 2: Convert to fraction form
    120,312.09/180,366.66 = 75,840.84/x
  3. Step 3: Cross multiply
    120,312.09x = 180,366.66 × 75,840.84
  4. Step 4: Simplify right side
    120,312.09x = 13,679,159,002.39
  5. Step 5: Solve for x
    x = 13,679,159,002.39/120,312.09
  6. Step 6: Final answer
    x = 113,697.29

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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.