Home / 112,493,285.70-168,739,928.55-78,453,068.10

Finding the Fourth Proportional to 112,493,285.70, 168,739,928.55 and 78,453,068.10

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Solution

The fourth proportional to 112,493,285.70, 168,739,928.55 and 78,453,068.10 is: 117,679,602.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,493,285.70 : 168,739,928.55 = 78,453,068.10 : x
  2. Step 2: Convert to fraction form
    112,493,285.70/168,739,928.55 = 78,453,068.10/x
  3. Step 3: Cross multiply
    112,493,285.70x = 168,739,928.55 × 78,453,068.10
  4. Step 4: Simplify right side
    112,493,285.70x = 13,238,165,105,722,284
  5. Step 5: Solve for x
    x = 13,238,165,105,722,284/112,493,285.70
  6. Step 6: Final answer
    x = 117,679,602.15

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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.