Finding the Fourth Proportional to 129,880,433.28, 179,185,108.64 and 74,128,948.08
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Solution
The fourth proportional to 129,880,433.28, 179,185,108.64 and 74,128,948.08 is: 102,269,474.16
Step by Step Solution
- Step 1: Write the proportion equation
129,880,433.28 : 179,185,108.64 = 74,128,948.08 : x - Step 2: Convert to fraction form
129,880,433.28/179,185,108.64 = 74,128,948.08/x - Step 3: Cross multiply
129,880,433.28x = 179,185,108.64 × 74,128,948.08 - Step 4: Simplify right side
129,880,433.28x = 13,282,803,615,083,718 - Step 5: Solve for x
x = 13,282,803,615,083,718/129,880,433.28 - Step 6: Final answer
x = 102,269,474.16
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1.5x scale
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.