Home / 212,139.81-318,141.69-69,953.13

Finding the Fourth Proportional to 212,139.81, 318,141.69 and 69,953.13

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Solution

The fourth proportional to 212,139.81, 318,141.69 and 69,953.13 is: 104,907.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,139.81 : 318,141.69 = 69,953.13 : x
  2. Step 2: Convert to fraction form
    212,139.81/318,141.69 = 69,953.13/x
  3. Step 3: Cross multiply
    212,139.81x = 318,141.69 × 69,953.13
  4. Step 4: Simplify right side
    212,139.81x = 22,255,006,998.99
  5. Step 5: Solve for x
    x = 22,255,006,998.99/212,139.81
  6. Step 6: Final answer
    x = 104,907.26

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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.