Home / 115,112.34-172,533.78-43,988.40

Finding the Fourth Proportional to 115,112.34, 172,533.78 and 43,988.40

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Solution

The fourth proportional to 115,112.34, 172,533.78 and 43,988.40 is: 65,931.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,112.34 : 172,533.78 = 43,988.40 : x
  2. Step 2: Convert to fraction form
    115,112.34/172,533.78 = 43,988.40/x
  3. Step 3: Cross multiply
    115,112.34x = 172,533.78 × 43,988.40
  4. Step 4: Simplify right side
    115,112.34x = 7,589,484,928.15
  5. Step 5: Solve for x
    x = 7,589,484,928.15/115,112.34
  6. Step 6: Final answer
    x = 65,931.12

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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.