Home / 145,322.40-217,983.60-78,794.40

Finding the Fourth Proportional to 145,322.40, 217,983.60 and 78,794.40

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Solution

The fourth proportional to 145,322.40, 217,983.60 and 78,794.40 is: 118,191.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,322.40 : 217,983.60 = 78,794.40 : x
  2. Step 2: Convert to fraction form
    145,322.40/217,983.60 = 78,794.40/x
  3. Step 3: Cross multiply
    145,322.40x = 217,983.60 × 78,794.40
  4. Step 4: Simplify right side
    145,322.40x = 17,175,886,971.84
  5. Step 5: Solve for x
    x = 17,175,886,971.84/145,322.40
  6. Step 6: Final answer
    x = 118,191.60

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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.