Finding the Fourth Proportional to 128,704,258.96, 177,445,167.84 and 83,360,330.96
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Solution
The fourth proportional to 128,704,258.96, 177,445,167.84 and 83,360,330.96 is: 114,929,280.80
Step by Step Solution
- Step 1: Write the proportion equation
128,704,258.96 : 177,445,167.84 = 83,360,330.96 : x - Step 2: Convert to fraction form
128,704,258.96/177,445,167.84 = 83,360,330.96/x - Step 3: Cross multiply
128,704,258.96x = 177,445,167.84 × 83,360,330.96 - Step 4: Simplify right side
128,704,258.96x = 14,791,887,918,395,148 - Step 5: Solve for x
x = 14,791,887,918,395,148/128,704,258.96 - Step 6: Final answer
x = 114,929,280.80
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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.