Home / 201,931.16-278,666.90-111,290.44

Finding the Fourth Proportional to 201,931.16, 278,666.90 and 111,290.44

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Solution

The fourth proportional to 201,931.16, 278,666.90 and 111,290.44 is: 153,581.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,931.16 : 278,666.90 = 111,290.44 : x
  2. Step 2: Convert to fraction form
    201,931.16/278,666.90 = 111,290.44/x
  3. Step 3: Cross multiply
    201,931.16x = 278,666.90 × 111,290.44
  4. Step 4: Simplify right side
    201,931.16x = 31,012,961,914.44
  5. Step 5: Solve for x
    x = 31,012,961,914.44/201,931.16
  6. Step 6: Final answer
    x = 153,581.85

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.