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Finding the Fourth Proportional to 105,093.30, 145,027.53 and 57,347.45

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Solution

The fourth proportional to 105,093.30, 145,027.53 and 57,347.45 is: 79,138.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,093.30 : 145,027.53 = 57,347.45 : x
  2. Step 2: Convert to fraction form
    105,093.30/145,027.53 = 57,347.45/x
  3. Step 3: Cross multiply
    105,093.30x = 145,027.53 × 57,347.45
  4. Step 4: Simplify right side
    105,093.30x = 8,316,958,300.16
  5. Step 5: Solve for x
    x = 8,316,958,300.16/105,093.30
  6. Step 6: Final answer
    x = 79,138.81

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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.