Finding the Fourth Proportional to 138,772,394.96, 191,506,130.12 and 76,038,524.10
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Solution
The fourth proportional to 138,772,394.96, 191,506,130.12 and 76,038,524.10 is: 104,933,286.59
Step by Step Solution
- Step 1: Write the proportion equation
138,772,394.96 : 191,506,130.12 = 76,038,524.10 : x - Step 2: Convert to fraction form
138,772,394.96/191,506,130.12 = 76,038,524.10/x - Step 3: Cross multiply
138,772,394.96x = 191,506,130.12 × 76,038,524.10 - Step 4: Simplify right side
138,772,394.96x = 14,561,843,490,427,356 - Step 5: Solve for x
x = 14,561,843,490,427,356/138,772,394.96 - Step 6: Final answer
x = 104,933,286.59
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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.