Finding the Fourth Proportional to 128,326,380.60, 177,090,452.37 and 69,589,030.53
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Solution
The fourth proportional to 128,326,380.60, 177,090,452.37 and 69,589,030.53 is: 96,032,887.70
Step by Step Solution
- Step 1: Write the proportion equation
128,326,380.60 : 177,090,452.37 = 69,589,030.53 : x - Step 2: Convert to fraction form
128,326,380.60/177,090,452.37 = 69,589,030.53/x - Step 3: Cross multiply
128,326,380.60x = 177,090,452.37 × 69,589,030.53 - Step 4: Simplify right side
128,326,380.60x = 12,323,552,896,547,442 - Step 5: Solve for x
x = 12,323,552,896,547,442/128,326,380.60 - Step 6: Final answer
x = 96,032,887.70
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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.