Home / 112,355,087.70-168,532,631.55-78,314,870.10

Finding the Fourth Proportional to 112,355,087.70, 168,532,631.55 and 78,314,870.10

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Solution

The fourth proportional to 112,355,087.70, 168,532,631.55 and 78,314,870.10 is: 117,472,305.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,355,087.70 : 168,532,631.55 = 78,314,870.10 : x
  2. Step 2: Convert to fraction form
    112,355,087.70/168,532,631.55 = 78,314,870.10/x
  3. Step 3: Cross multiply
    112,355,087.70x = 168,532,631.55 × 78,314,870.10
  4. Step 4: Simplify right side
    112,355,087.70x = 13,198,611,147,449,412
  5. Step 5: Solve for x
    x = 13,198,611,147,449,412/112,355,087.70
  6. Step 6: Final answer
    x = 117,472,305.15

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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.