Finding the Fourth Proportional to 128,860,369.74, 177,827,336.55 and 70,913,617.74
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Solution
The fourth proportional to 128,860,369.74, 177,827,336.55 and 70,913,617.74 is: 97,860,806.96
Step by Step Solution
- Step 1: Write the proportion equation
128,860,369.74 : 177,827,336.55 = 70,913,617.74 : x - Step 2: Convert to fraction form
128,860,369.74/177,827,336.55 = 70,913,617.74/x - Step 3: Cross multiply
128,860,369.74x = 177,827,336.55 × 70,913,617.74 - Step 4: Simplify right side
128,860,369.74x = 12,610,379,767,829,030 - Step 5: Solve for x
x = 12,610,379,767,829,030/128,860,369.74 - Step 6: Final answer
x = 97,860,806.96
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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.