Home / 103,774.60-155,660.30-70,411.72

Finding the Fourth Proportional to 103,774.60, 155,660.30 and 70,411.72

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Solution

The fourth proportional to 103,774.60, 155,660.30 and 70,411.72 is: 105,616.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,774.60 : 155,660.30 = 70,411.72 : x
  2. Step 2: Convert to fraction form
    103,774.60/155,660.30 = 70,411.72/x
  3. Step 3: Cross multiply
    103,774.60x = 155,660.30 × 70,411.72
  4. Step 4: Simplify right side
    103,774.60x = 10,960,309,458.72
  5. Step 5: Solve for x
    x = 10,960,309,458.72/103,774.60
  6. Step 6: Final answer
    x = 105,616.49

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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.