Home / 187,663.56-258,966.09-102,778.80

Finding the Fourth Proportional to 187,663.56, 258,966.09 and 102,778.80

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Solution

The fourth proportional to 187,663.56, 258,966.09 and 102,778.80 is: 141,829.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,663.56 : 258,966.09 = 102,778.80 : x
  2. Step 2: Convert to fraction form
    187,663.56/258,966.09 = 102,778.80/x
  3. Step 3: Cross multiply
    187,663.56x = 258,966.09 × 102,778.80
  4. Step 4: Simplify right side
    187,663.56x = 26,616,223,970.89
  5. Step 5: Solve for x
    x = 26,616,223,970.89/187,663.56
  6. Step 6: Final answer
    x = 141,829.47

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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.