Home / 107,707.16-161,320.17-78,056.91

Finding the Fourth Proportional to 107,707.16, 161,320.17 and 78,056.91

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Solution

The fourth proportional to 107,707.16, 161,320.17 and 78,056.91 is: 116,911.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,707.16 : 161,320.17 = 78,056.91 : x
  2. Step 2: Convert to fraction form
    107,707.16/161,320.17 = 78,056.91/x
  3. Step 3: Cross multiply
    107,707.16x = 161,320.17 × 78,056.91
  4. Step 4: Simplify right side
    107,707.16x = 12,592,153,990.87
  5. Step 5: Solve for x
    x = 12,592,153,990.87/107,707.16
  6. Step 6: Final answer
    x = 116,911.02

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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.