Finding the Fourth Proportional to 135,341,987.28, 186,767,109.08 and 76,603,391.15
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Solution
The fourth proportional to 135,341,987.28, 186,767,109.08 and 76,603,391.15 is: 105,709,944.11
Step by Step Solution
- Step 1: Write the proportion equation
135,341,987.28 : 186,767,109.08 = 76,603,391.15 : x - Step 2: Convert to fraction form
135,341,987.28/186,767,109.08 = 76,603,391.15/x - Step 3: Cross multiply
135,341,987.28x = 186,767,109.08 × 76,603,391.15 - Step 4: Simplify right side
135,341,987.28x = 14,306,993,911,356,122 - Step 5: Solve for x
x = 14,306,993,911,356,122/135,341,987.28 - Step 6: Final answer
x = 105,709,944.11
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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.