Finding the Fourth Proportional to 153,656.21, 212,030.08 and 85,666.79
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Solution
The fourth proportional to 153,656.21, 212,030.08 and 85,666.79 is: 118,211.53
Step by Step Solution
- Step 1: Write the proportion equation
153,656.21 : 212,030.08 = 85,666.79 : x - Step 2: Convert to fraction form
153,656.21/212,030.08 = 85,666.79/x - Step 3: Cross multiply
153,656.21x = 212,030.08 × 85,666.79 - Step 4: Simplify right side
153,656.21x = 18,163,936,652.95 - Step 5: Solve for x
x = 18,163,936,652.95/153,656.21 - Step 6: Final answer
x = 118,211.53
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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.