Finding the Fourth Proportional to 159,420.18, 220,009.80 and 87,800.19
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Solution
The fourth proportional to 159,420.18, 220,009.80 and 87,800.19 is: 121,169.74
Step by Step Solution
- Step 1: Write the proportion equation
159,420.18 : 220,009.80 = 87,800.19 : x - Step 2: Convert to fraction form
159,420.18/220,009.80 = 87,800.19/x - Step 3: Cross multiply
159,420.18x = 220,009.80 × 87,800.19 - Step 4: Simplify right side
159,420.18x = 19,316,901,746.08 - Step 5: Solve for x
x = 19,316,901,746.08/159,420.18 - Step 6: Final answer
x = 121,169.74
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1.5x scale
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.