Finding the Fourth Proportional to 153,705.36, 230,246.40 and 87,005.28
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Solution
The fourth proportional to 153,705.36, 230,246.40 and 87,005.28 is: 130,331.52
Step by Step Solution
- Step 1: Write the proportion equation
153,705.36 : 230,246.40 = 87,005.28 : x - Step 2: Convert to fraction form
153,705.36/230,246.40 = 87,005.28/x - Step 3: Cross multiply
153,705.36x = 230,246.40 × 87,005.28 - Step 4: Simplify right side
153,705.36x = 20,032,652,500.99 - Step 5: Solve for x
x = 20,032,652,500.99/153,705.36 - Step 6: Final answer
x = 130,331.52
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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.