Home / 112,311,856.30-168,356,181.84-78,161,457.64

Finding the Fourth Proportional to 112,311,856.30, 168,356,181.84 and 78,161,457.64

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Solution

The fourth proportional to 112,311,856.30, 168,356,181.84 and 78,161,457.64 is: 117,164,518.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,311,856.30 : 168,356,181.84 = 78,161,457.64 : x
  2. Step 2: Convert to fraction form
    112,311,856.30/168,356,181.84 = 78,161,457.64/x
  3. Step 3: Cross multiply
    112,311,856.30x = 168,356,181.84 × 78,161,457.64
  4. Step 4: Simplify right side
    112,311,856.30x = 13,158,964,574,507,600
  5. Step 5: Solve for x
    x = 13,158,964,574,507,600/112,311,856.30
  6. Step 6: Final answer
    x = 117,164,518.59

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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.