Home / 115,017,161.49-172,397,950.36-87,633,175.39

Finding the Fourth Proportional to 115,017,161.49, 172,397,950.36 and 87,633,175.39

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Solution

The fourth proportional to 115,017,161.49, 172,397,950.36 and 87,633,175.39 is: 131,352,396.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,017,161.49 : 172,397,950.36 = 87,633,175.39 : x
  2. Step 2: Convert to fraction form
    115,017,161.49/172,397,950.36 = 87,633,175.39/x
  3. Step 3: Cross multiply
    115,017,161.49x = 172,397,950.36 × 87,633,175.39
  4. Step 4: Simplify right side
    115,017,161.49x = 15,107,779,820,124,316
  5. Step 5: Solve for x
    x = 15,107,779,820,124,316/115,017,161.49
  6. Step 6: Final answer
    x = 131,352,396.67

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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.