Home / 125,421.30-188,161.14-42,315.30

Finding the Fourth Proportional to 125,421.30, 188,161.14 and 42,315.30

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Solution

The fourth proportional to 125,421.30, 188,161.14 and 42,315.30 is: 63,482.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,421.30 : 188,161.14 = 42,315.30 : x
  2. Step 2: Convert to fraction form
    125,421.30/188,161.14 = 42,315.30/x
  3. Step 3: Cross multiply
    125,421.30x = 188,161.14 × 42,315.30
  4. Step 4: Simplify right side
    125,421.30x = 7,962,095,087.44
  5. Step 5: Solve for x
    x = 7,962,095,087.44/125,421.30
  6. Step 6: Final answer
    x = 63,482.80

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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.