Home / 247,975.23-342,209.56-139,103.70

Finding the Fourth Proportional to 247,975.23, 342,209.56 and 139,103.70

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Solution

The fourth proportional to 247,975.23, 342,209.56 and 139,103.70 is: 191,965.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,975.23 : 342,209.56 = 139,103.70 : x
  2. Step 2: Convert to fraction form
    247,975.23/342,209.56 = 139,103.70/x
  3. Step 3: Cross multiply
    247,975.23x = 342,209.56 × 139,103.70
  4. Step 4: Simplify right side
    247,975.23x = 47,602,615,971.37
  5. Step 5: Solve for x
    x = 47,602,615,971.37/247,975.23
  6. Step 6: Final answer
    x = 191,965.21

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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.