Home / 105,186.12-145,151.40-57,430.24

Finding the Fourth Proportional to 105,186.12, 145,151.40 and 57,430.24

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Solution

The fourth proportional to 105,186.12, 145,151.40 and 57,430.24 is: 79,250.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,186.12 : 145,151.40 = 57,430.24 : x
  2. Step 2: Convert to fraction form
    105,186.12/145,151.40 = 57,430.24/x
  3. Step 3: Cross multiply
    105,186.12x = 145,151.40 × 57,430.24
  4. Step 4: Simplify right side
    105,186.12x = 8,336,079,738.34
  5. Step 5: Solve for x
    x = 8,336,079,738.34/105,186.12
  6. Step 6: Final answer
    x = 79,250.76

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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.