Home / 187,011.59-258,076.94-102,128.65

Finding the Fourth Proportional to 187,011.59, 258,076.94 and 102,128.65

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Solution

The fourth proportional to 187,011.59, 258,076.94 and 102,128.65 is: 140,938.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,011.59 : 258,076.94 = 102,128.65 : x
  2. Step 2: Convert to fraction form
    187,011.59/258,076.94 = 102,128.65/x
  3. Step 3: Cross multiply
    187,011.59x = 258,076.94 × 102,128.65
  4. Step 4: Simplify right side
    187,011.59x = 26,357,048,322.50
  5. Step 5: Solve for x
    x = 26,357,048,322.50/187,011.59
  6. Step 6: Final answer
    x = 140,938.05

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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.