Home / 126,047.40-189,071.10-102,427.80

Finding the Fourth Proportional to 126,047.40, 189,071.10 and 102,427.80

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Solution

The fourth proportional to 126,047.40, 189,071.10 and 102,427.80 is: 153,641.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,047.40 : 189,071.10 = 102,427.80 : x
  2. Step 2: Convert to fraction form
    126,047.40/189,071.10 = 102,427.80/x
  3. Step 3: Cross multiply
    126,047.40x = 189,071.10 × 102,427.80
  4. Step 4: Simplify right side
    126,047.40x = 19,366,136,816.58
  5. Step 5: Solve for x
    x = 19,366,136,816.58/126,047.40
  6. Step 6: Final answer
    x = 153,641.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.