Finding the Fourth Proportional to 103,088.79, 155,335.52 and 84,778.99
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Solution
The fourth proportional to 103,088.79, 155,335.52 and 84,778.99 is: 127,746.08
Step by Step Solution
- Step 1: Write the proportion equation
103,088.79 : 155,335.52 = 84,778.99 : x - Step 2: Convert to fraction form
103,088.79/155,335.52 = 84,778.99/x - Step 3: Cross multiply
103,088.79x = 155,335.52 × 84,778.99 - Step 4: Simplify right side
103,088.79x = 13,169,188,320.33 - Step 5: Solve for x
x = 13,169,188,320.33/103,088.79 - Step 6: Final answer
x = 127,746.08
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.