Home / 161,856.82-242,888.91-78,705.46

Finding the Fourth Proportional to 161,856.82, 242,888.91 and 78,705.46

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Solution

The fourth proportional to 161,856.82, 242,888.91 and 78,705.46 is: 118,108.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,856.82 : 242,888.91 = 78,705.46 : x
  2. Step 2: Convert to fraction form
    161,856.82/242,888.91 = 78,705.46/x
  3. Step 3: Cross multiply
    161,856.82x = 242,888.91 × 78,705.46
  4. Step 4: Simplify right side
    161,856.82x = 19,116,683,390.45
  5. Step 5: Solve for x
    x = 19,116,683,390.45/161,856.82
  6. Step 6: Final answer
    x = 118,108.61

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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.