Home / 103,780.40-155,655.12-28,892.72

Finding the Fourth Proportional to 103,780.40, 155,655.12 and 28,892.72

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Solution

The fourth proportional to 103,780.40, 155,655.12 and 28,892.72 is: 43,334.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,780.40 : 155,655.12 = 28,892.72 : x
  2. Step 2: Convert to fraction form
    103,780.40/155,655.12 = 28,892.72/x
  3. Step 3: Cross multiply
    103,780.40x = 155,655.12 × 28,892.72
  4. Step 4: Simplify right side
    103,780.40x = 4,497,299,798.73
  5. Step 5: Solve for x
    x = 4,497,299,798.73/103,780.40
  6. Step 6: Final answer
    x = 43,334.77

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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.