Home / 212,411.12-318,813.57-107,303.90

Finding the Fourth Proportional to 212,411.12, 318,813.57 and 107,303.90

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Solution

The fourth proportional to 212,411.12, 318,813.57 and 107,303.90 is: 161,055.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,411.12 : 318,813.57 = 107,303.90 : x
  2. Step 2: Convert to fraction form
    212,411.12/318,813.57 = 107,303.90/x
  3. Step 3: Cross multiply
    212,411.12x = 318,813.57 × 107,303.90
  4. Step 4: Simplify right side
    212,411.12x = 34,209,937,839.86
  5. Step 5: Solve for x
    x = 34,209,937,839.86/212,411.12
  6. Step 6: Final answer
    x = 161,055.31

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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.