Home / 100,938.08-151,430.78-30,817.40

Finding the Fourth Proportional to 100,938.08, 151,430.78 and 30,817.40

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Solution

The fourth proportional to 100,938.08, 151,430.78 and 30,817.40 is: 46,233.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,938.08 : 151,430.78 = 30,817.40 : x
  2. Step 2: Convert to fraction form
    100,938.08/151,430.78 = 30,817.40/x
  3. Step 3: Cross multiply
    100,938.08x = 151,430.78 × 30,817.40
  4. Step 4: Simplify right side
    100,938.08x = 4,666,702,919.57
  5. Step 5: Solve for x
    x = 4,666,702,919.57/100,938.08
  6. Step 6: Final answer
    x = 46,233.32

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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.