Finding the Fourth Proportional to 106,566,312.40, 159,849,468.60 and 72,128,935.60
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Solution
The fourth proportional to 106,566,312.40, 159,849,468.60 and 72,128,935.60 is: 108,193,403.40
Step by Step Solution
- Step 1: Write the proportion equation
106,566,312.40 : 159,849,468.60 = 72,128,935.60 : x - Step 2: Convert to fraction form
106,566,312.40/159,849,468.60 = 72,128,935.60/x - Step 3: Cross multiply
106,566,312.40x = 159,849,468.60 × 72,128,935.60 - Step 4: Simplify right side
106,566,312.40x = 11,529,772,026,343,620 - Step 5: Solve for x
x = 11,529,772,026,343,620/106,566,312.40 - Step 6: Final answer
x = 108,193,403.40
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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.