Home / 112,019,821.60-168,029,732.40-105,217,376.80

Finding the Fourth Proportional to 112,019,821.60, 168,029,732.40 and 105,217,376.80

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Solution

The fourth proportional to 112,019,821.60, 168,029,732.40 and 105,217,376.80 is: 157,826,065.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,019,821.60 : 168,029,732.40 = 105,217,376.80 : x
  2. Step 2: Convert to fraction form
    112,019,821.60/168,029,732.40 = 105,217,376.80/x
  3. Step 3: Cross multiply
    112,019,821.60x = 168,029,732.40 × 105,217,376.80
  4. Step 4: Simplify right side
    112,019,821.60x = 17,679,647,667,533,968
  5. Step 5: Solve for x
    x = 17,679,647,667,533,968/112,019,821.60
  6. Step 6: Final answer
    x = 157,826,065.20

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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.