Home / 115,182.96-172,384.20-70,837.80

Finding the Fourth Proportional to 115,182.96, 172,384.20 and 70,837.80

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Solution

The fourth proportional to 115,182.96, 172,384.20 and 70,837.80 is: 106,016.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,182.96 : 172,384.20 = 70,837.80 : x
  2. Step 2: Convert to fraction form
    115,182.96/172,384.20 = 70,837.80/x
  3. Step 3: Cross multiply
    115,182.96x = 172,384.20 × 70,837.80
  4. Step 4: Simplify right side
    115,182.96x = 12,211,317,482.76
  5. Step 5: Solve for x
    x = 12,211,317,482.76/115,182.96
  6. Step 6: Final answer
    x = 106,016.70

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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.