Finding the Fourth Proportional to 128,288,533,823.16, 177,038,351,990.83 and 69,627,356,705.75
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Solution
The fourth proportional to 128,288,533,823.16, 177,038,351,990.83 and 69,627,356,705.75 is: 96,085,847,404.37
Step by Step Solution
- Step 1: Write the proportion equation
128,288,533,823.16 : 177,038,351,990.83 = 69,627,356,705.75 : x - Step 2: Convert to fraction form
128,288,533,823.16/177,038,351,990.83 = 69,627,356,705.75/x - Step 3: Cross multiply
128,288,533,823.16x = 177,038,351,990.83 × 69,627,356,705.75 - Step 4: Simplify right side
128,288,533,823.16x = 12,326,712,484,663,113,285,632 - Step 5: Solve for x
x = 12,326,712,484,663,113,285,632/128,288,533,823.16 - Step 6: Final answer
x = 96,085,847,404.37
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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.