Home / 115,182.90-172,384.20-70,837.74

Finding the Fourth Proportional to 115,182.90, 172,384.20 and 70,837.74

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Solution

The fourth proportional to 115,182.90, 172,384.20 and 70,837.74 is: 106,016.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,182.90 : 172,384.20 = 70,837.74 : x
  2. Step 2: Convert to fraction form
    115,182.90/172,384.20 = 70,837.74/x
  3. Step 3: Cross multiply
    115,182.90x = 172,384.20 × 70,837.74
  4. Step 4: Simplify right side
    115,182.90x = 12,211,307,139.71
  5. Step 5: Solve for x
    x = 12,211,307,139.71/115,182.90
  6. Step 6: Final answer
    x = 106,016.67

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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.