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Finding the Fourth Proportional to 145,010.60, 217,515.90 and 127,903.40

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Solution

The fourth proportional to 145,010.60, 217,515.90 and 127,903.40 is: 191,855.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,010.60 : 217,515.90 = 127,903.40 : x
  2. Step 2: Convert to fraction form
    145,010.60/217,515.90 = 127,903.40/x
  3. Step 3: Cross multiply
    145,010.60x = 217,515.90 × 127,903.40
  4. Step 4: Simplify right side
    145,010.60x = 27,821,023,164.06
  5. Step 5: Solve for x
    x = 27,821,023,164.06/145,010.60
  6. Step 6: Final answer
    x = 191,855.10

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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.