Home / 163,521.03-245,175.99-78,085.67

Finding the Fourth Proportional to 163,521.03, 245,175.99 and 78,085.67

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Solution

The fourth proportional to 163,521.03, 245,175.99 and 78,085.67 is: 117,078.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,521.03 : 245,175.99 = 78,085.67 : x
  2. Step 2: Convert to fraction form
    163,521.03/245,175.99 = 78,085.67/x
  3. Step 3: Cross multiply
    163,521.03x = 245,175.99 × 78,085.67
  4. Step 4: Simplify right side
    163,521.03x = 19,144,731,447.06
  5. Step 5: Solve for x
    x = 19,144,731,447.06/163,521.03
  6. Step 6: Final answer
    x = 117,078.10

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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.