Home / 212,415.30-318,622.95-117,936.90

Finding the Fourth Proportional to 212,415.30, 318,622.95 and 117,936.90

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Solution

The fourth proportional to 212,415.30, 318,622.95 and 117,936.90 is: 176,905.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,415.30 : 318,622.95 = 117,936.90 : x
  2. Step 2: Convert to fraction form
    212,415.30/318,622.95 = 117,936.90/x
  3. Step 3: Cross multiply
    212,415.30x = 318,622.95 × 117,936.90
  4. Step 4: Simplify right side
    212,415.30x = 37,577,402,991.86
  5. Step 5: Solve for x
    x = 37,577,402,991.86/212,415.30
  6. Step 6: Final answer
    x = 176,905.35

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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.