Finding the Fourth Proportional to 155,721.51, 214,671.74 and 110,931.75
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Solution
The fourth proportional to 155,721.51, 214,671.74 and 110,931.75 is: 152,926.28
Step by Step Solution
- Step 1: Write the proportion equation
155,721.51 : 214,671.74 = 110,931.75 : x - Step 2: Convert to fraction form
155,721.51/214,671.74 = 110,931.75/x - Step 3: Cross multiply
155,721.51x = 214,671.74 × 110,931.75 - Step 4: Simplify right side
155,721.51x = 23,813,911,239.09 - Step 5: Solve for x
x = 23,813,911,239.09/155,721.51 - Step 6: Final answer
x = 152,926.28
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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.