Finding the Fourth Proportional to 128,880,875.43, 177,406,410.74 and 112,332,244.95
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Solution
The fourth proportional to 128,880,875.43, 177,406,410.74 and 112,332,244.95 is: 154,626,978.75
Step by Step Solution
- Step 1: Write the proportion equation
128,880,875.43 : 177,406,410.74 = 112,332,244.95 : x - Step 2: Convert to fraction form
128,880,875.43/177,406,410.74 = 112,332,244.95/x - Step 3: Cross multiply
128,880,875.43x = 177,406,410.74 × 112,332,244.95 - Step 4: Simplify right side
128,880,875.43x = 19,928,460,386,384,332 - Step 5: Solve for x
x = 19,928,460,386,384,332/128,880,875.43 - Step 6: Final answer
x = 154,626,978.75
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.