Finding the Fourth Proportional to 128,947,954.20, 193,421,931.30 and 117,043,675.80
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Solution
The fourth proportional to 128,947,954.20, 193,421,931.30 and 117,043,675.80 is: 175,565,513.70
Step by Step Solution
- Step 1: Write the proportion equation
128,947,954.20 : 193,421,931.30 = 117,043,675.80 : x - Step 2: Convert to fraction form
128,947,954.20/193,421,931.30 = 117,043,675.80/x - Step 3: Cross multiply
128,947,954.20x = 193,421,931.30 × 117,043,675.80 - Step 4: Simplify right side
128,947,954.20x = 22,638,813,819,687,072 - Step 5: Solve for x
x = 22,638,813,819,687,072/128,947,954.20 - Step 6: Final answer
x = 175,565,513.70
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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.