Finding the Fourth Proportional to 128,009,609.96, 176,653,261.67 and 69,272,275.68
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Solution
The fourth proportional to 128,009,609.96, 176,653,261.67 and 69,272,275.68 is: 95,595,740.40
Step by Step Solution
- Step 1: Write the proportion equation
128,009,609.96 : 176,653,261.67 = 69,272,275.68 : x - Step 2: Convert to fraction form
128,009,609.96/176,653,261.67 = 69,272,275.68/x - Step 3: Cross multiply
128,009,609.96x = 176,653,261.67 × 69,272,275.68 - Step 4: Simplify right side
128,009,609.96x = 12,237,173,441,829,056 - Step 5: Solve for x
x = 12,237,173,441,829,056/128,009,609.96 - Step 6: Final answer
x = 95,595,740.40
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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.