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Finding the Fourth Proportional to 98,869, 148,179.10 and 70,642.12

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Solution

The fourth proportional to 98,869, 148,179.10 and 70,642.12 is: 105,874.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,869 : 148,179.10 = 70,642.12 : x
  2. Step 2: Convert to fraction form
    98,869/148,179.10 = 70,642.12/x
  3. Step 3: Cross multiply
    98,869x = 148,179.10 × 70,642.12
  4. Step 4: Simplify right side
    98,869x = 10,467,685,763.69
  5. Step 5: Solve for x
    x = 10,467,685,763.69/98,869
  6. Step 6: Final answer
    x = 105,874.30

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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.