Finding the Fourth Proportional to 147,623,902.80, 221,435,854.20 and 86,149,957.20
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Solution
The fourth proportional to 147,623,902.80, 221,435,854.20 and 86,149,957.20 is: 129,224,935.80
Step by Step Solution
- Step 1: Write the proportion equation
147,623,902.80 : 221,435,854.20 = 86,149,957.20 : x - Step 2: Convert to fraction form
147,623,902.80/221,435,854.20 = 86,149,957.20/x - Step 3: Cross multiply
147,623,902.80x = 221,435,854.20 × 86,149,957.20 - Step 4: Simplify right side
147,623,902.80x = 19,076,689,361,875,440 - Step 5: Solve for x
x = 19,076,689,361,875,440/147,623,902.80 - Step 6: Final answer
x = 129,224,935.80
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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.