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Finding the Fourth Proportional to 105,146.39, 145,100.01 and 57,400.07

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Solution

The fourth proportional to 105,146.39, 145,100.01 and 57,400.07 is: 79,211.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,146.39 : 145,100.01 = 57,400.07 : x
  2. Step 2: Convert to fraction form
    105,146.39/145,100.01 = 57,400.07/x
  3. Step 3: Cross multiply
    105,146.39x = 145,100.01 × 57,400.07
  4. Step 4: Simplify right side
    105,146.39x = 8,328,750,731.00
  5. Step 5: Solve for x
    x = 8,328,750,731.00/105,146.39
  6. Step 6: Final answer
    x = 79,211.00

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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.