Finding the Fourth Proportional to 130,509,970.20, 180,099,636.30 and 71,772,454.08
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Solution
The fourth proportional to 130,509,970.20, 180,099,636.30 and 71,772,454.08 is: 99,043,719.47
Step by Step Solution
- Step 1: Write the proportion equation
130,509,970.20 : 180,099,636.30 = 71,772,454.08 : x - Step 2: Convert to fraction form
130,509,970.20/180,099,636.30 = 71,772,454.08/x - Step 3: Cross multiply
130,509,970.20x = 180,099,636.30 × 71,772,454.08 - Step 4: Simplify right side
130,509,970.20x = 12,926,192,876,166,452 - Step 5: Solve for x
x = 12,926,192,876,166,452/130,509,970.20 - Step 6: Final answer
x = 99,043,719.47
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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.