Finding the Fourth Proportional to 157,114.24, 235,746.48 and 78,235.36
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Solution
The fourth proportional to 157,114.24, 235,746.48 and 78,235.36 is: 117,390.45
Step by Step Solution
- Step 1: Write the proportion equation
157,114.24 : 235,746.48 = 78,235.36 : x - Step 2: Convert to fraction form
157,114.24/235,746.48 = 78,235.36/x - Step 3: Cross multiply
157,114.24x = 235,746.48 × 78,235.36 - Step 4: Simplify right side
157,114.24x = 18,443,710,731.53 - Step 5: Solve for x
x = 18,443,710,731.53/157,114.24 - Step 6: Final answer
x = 117,390.45
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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.