Home / 139,920.07-209,859.60-68,823.63

Finding the Fourth Proportional to 139,920.07, 209,859.60 and 68,823.63

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Solution

The fourth proportional to 139,920.07, 209,859.60 and 68,823.63 is: 103,225.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,920.07 : 209,859.60 = 68,823.63 : x
  2. Step 2: Convert to fraction form
    139,920.07/209,859.60 = 68,823.63/x
  3. Step 3: Cross multiply
    139,920.07x = 209,859.60 × 68,823.63
  4. Step 4: Simplify right side
    139,920.07x = 14,443,299,462.35
  5. Step 5: Solve for x
    x = 14,443,299,462.35/139,920.07
  6. Step 6: Final answer
    x = 103,225.36

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1.5x scale

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.