Home / 107,718.40-161,337.04-78,068.16

Finding the Fourth Proportional to 107,718.40, 161,337.04 and 78,068.16

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Solution

The fourth proportional to 107,718.40, 161,337.04 and 78,068.16 is: 116,927.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,718.40 : 161,337.04 = 78,068.16 : x
  2. Step 2: Convert to fraction form
    107,718.40/161,337.04 = 78,068.16/x
  3. Step 3: Cross multiply
    107,718.40x = 161,337.04 × 78,068.16
  4. Step 4: Simplify right side
    107,718.40x = 12,595,285,852.65
  5. Step 5: Solve for x
    x = 12,595,285,852.65/107,718.40
  6. Step 6: Final answer
    x = 116,927.90

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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.