Finding the Fourth Proportional to 157,398,427.68, 235,781,452.32 and 78,376,869.12
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Solution
The fourth proportional to 157,398,427.68, 235,781,452.32 and 78,376,869.12 is: 117,407,856.62
Step by Step Solution
- Step 1: Write the proportion equation
157,398,427.68 : 235,781,452.32 = 78,376,869.12 : x - Step 2: Convert to fraction form
157,398,427.68/235,781,452.32 = 78,376,869.12/x - Step 3: Cross multiply
157,398,427.68x = 235,781,452.32 × 78,376,869.12 - Step 4: Simplify right side
157,398,427.68x = 18,479,812,029,408,160 - Step 5: Solve for x
x = 18,479,812,029,408,160/157,398,427.68 - Step 6: Final answer
x = 117,407,856.62
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.