Finding the Fourth Proportional to 156,637.30, 234,437.55 and 121,386.10
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Solution
The fourth proportional to 156,637.30, 234,437.55 and 121,386.10 is: 181,677.42
Step by Step Solution
- Step 1: Write the proportion equation
156,637.30 : 234,437.55 = 121,386.10 : x - Step 2: Convert to fraction form
156,637.30/234,437.55 = 121,386.10/x - Step 3: Cross multiply
156,637.30x = 234,437.55 × 121,386.10 - Step 4: Simplify right side
156,637.30x = 28,457,459,888.06 - Step 5: Solve for x
x = 28,457,459,888.06/156,637.30 - Step 6: Final answer
x = 181,677.42
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.