Finding the Fourth Proportional to 153,294,837.13, 211,549,106.17 and 87,213,913.15
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Solution
The fourth proportional to 153,294,837.13, 211,549,106.17 and 87,213,913.15 is: 120,356,469.39
Step by Step Solution
- Step 1: Write the proportion equation
153,294,837.13 : 211,549,106.17 = 87,213,913.15 : x - Step 2: Convert to fraction form
153,294,837.13/211,549,106.17 = 87,213,913.15/x - Step 3: Cross multiply
153,294,837.13x = 211,549,106.17 × 87,213,913.15 - Step 4: Simplify right side
153,294,837.13x = 18,450,025,372,034,440 - Step 5: Solve for x
x = 18,450,025,372,034,440/153,294,837.13 - Step 6: Final answer
x = 120,356,469.39
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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.