Home / 212,516.12-318,697.61-70,335.15

Finding the Fourth Proportional to 212,516.12, 318,697.61 and 70,335.15

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Solution

The fourth proportional to 212,516.12, 318,697.61 and 70,335.15 is: 105,477.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,516.12 : 318,697.61 = 70,335.15 : x
  2. Step 2: Convert to fraction form
    212,516.12/318,697.61 = 70,335.15/x
  3. Step 3: Cross multiply
    212,516.12x = 318,697.61 × 70,335.15
  4. Step 4: Simplify right side
    212,516.12x = 22,415,643,852.32
  5. Step 5: Solve for x
    x = 22,415,643,852.32/212,516.12
  6. Step 6: Final answer
    x = 105,477.38

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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.