Home / 187,314.36-258,495.18-105,643.68

Finding the Fourth Proportional to 187,314.36, 258,495.18 and 105,643.68

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Solution

The fourth proportional to 187,314.36, 258,495.18 and 105,643.68 is: 145,789.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,314.36 : 258,495.18 = 105,643.68 : x
  2. Step 2: Convert to fraction form
    187,314.36/258,495.18 = 105,643.68/x
  3. Step 3: Cross multiply
    187,314.36x = 258,495.18 × 105,643.68
  4. Step 4: Simplify right side
    187,314.36x = 27,308,382,077.46
  5. Step 5: Solve for x
    x = 27,308,382,077.46/187,314.36
  6. Step 6: Final answer
    x = 145,789.05

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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.