Home / 103,689.14-155,536.55-28,809.50

Finding the Fourth Proportional to 103,689.14, 155,536.55 and 28,809.50

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Solution

The fourth proportional to 103,689.14, 155,536.55 and 28,809.50 is: 43,215.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,689.14 : 155,536.55 = 28,809.50 : x
  2. Step 2: Convert to fraction form
    103,689.14/155,536.55 = 28,809.50/x
  3. Step 3: Cross multiply
    103,689.14x = 155,536.55 × 28,809.50
  4. Step 4: Simplify right side
    103,689.14x = 4,480,930,237.23
  5. Step 5: Solve for x
    x = 4,480,930,237.23/103,689.14
  6. Step 6: Final answer
    x = 43,215.04

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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.