Home / 105,242.63-145,238.03-57,499.07

Finding the Fourth Proportional to 105,242.63, 145,238.03 and 57,499.07

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Solution

The fourth proportional to 105,242.63, 145,238.03 and 57,499.07 is: 79,350.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,242.63 : 145,238.03 = 57,499.07 : x
  2. Step 2: Convert to fraction form
    105,242.63/145,238.03 = 57,499.07/x
  3. Step 3: Cross multiply
    105,242.63x = 145,238.03 × 57,499.07
  4. Step 4: Simplify right side
    105,242.63x = 8,351,050,855.57
  5. Step 5: Solve for x
    x = 8,351,050,855.57/105,242.63
  6. Step 6: Final answer
    x = 79,350.46

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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.