Finding the Fourth Proportional to 122,787,101.23, 169,445,160.44 and 67,781,776.75
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Solution
The fourth proportional to 122,787,101.23, 169,445,160.44 and 67,781,776.75 is: 93,538,278.21
Step by Step Solution
- Step 1: Write the proportion equation
122,787,101.23 : 169,445,160.44 = 67,781,776.75 : x - Step 2: Convert to fraction form
122,787,101.23/169,445,160.44 = 67,781,776.75/x - Step 3: Cross multiply
122,787,101.23x = 169,445,160.44 × 67,781,776.75 - Step 4: Simplify right side
122,787,101.23x = 11,485,294,035,973,104 - Step 5: Solve for x
x = 11,485,294,035,973,104/122,787,101.23 - Step 6: Final answer
x = 93,538,278.21
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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.