Home / 139,316.06-192,256.91-78,898.46

Finding the Fourth Proportional to 139,316.06, 192,256.91 and 78,898.46

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Solution

The fourth proportional to 139,316.06, 192,256.91 and 78,898.46 is: 108,880.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,316.06 : 192,256.91 = 78,898.46 : x
  2. Step 2: Convert to fraction form
    139,316.06/192,256.91 = 78,898.46/x
  3. Step 3: Cross multiply
    139,316.06x = 192,256.91 × 78,898.46
  4. Step 4: Simplify right side
    139,316.06x = 15,168,772,767.58
  5. Step 5: Solve for x
    x = 15,168,772,767.58/139,316.06
  6. Step 6: Final answer
    x = 108,880.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.