Finding the Fourth Proportional to 122,370,155.28, 168,865,641.84 and 66,614,415.12
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Solution
The fourth proportional to 122,370,155.28, 168,865,641.84 and 66,614,415.12 is: 91,925,077.15
Step by Step Solution
- Step 1: Write the proportion equation
122,370,155.28 : 168,865,641.84 = 66,614,415.12 : x - Step 2: Convert to fraction form
122,370,155.28/168,865,641.84 = 66,614,415.12/x - Step 3: Cross multiply
122,370,155.28x = 168,865,641.84 × 66,614,415.12 - Step 4: Simplify right side
122,370,155.28x = 11,248,885,965,035,000 - Step 5: Solve for x
x = 11,248,885,965,035,000/122,370,155.28 - Step 6: Final answer
x = 91,925,077.15
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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.