Home / 145,824.40-201,237.63-78,756.40

Finding the Fourth Proportional to 145,824.40, 201,237.63 and 78,756.40

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Solution

The fourth proportional to 145,824.40, 201,237.63 and 78,756.40 is: 108,683.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,824.40 : 201,237.63 = 78,756.40 : x
  2. Step 2: Convert to fraction form
    145,824.40/201,237.63 = 78,756.40/x
  3. Step 3: Cross multiply
    145,824.40x = 201,237.63 × 78,756.40
  4. Step 4: Simplify right side
    145,824.40x = 15,848,751,283.33
  5. Step 5: Solve for x
    x = 15,848,751,283.33/145,824.40
  6. Step 6: Final answer
    x = 108,683.81

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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.