Finding the Fourth Proportional to 128,011,781.56, 176,656,252.54 and 69,274,440
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Solution
The fourth proportional to 128,011,781.56, 176,656,252.54 and 69,274,440 is: 95,598,723.95
Step by Step Solution
- Step 1: Write the proportion equation
128,011,781.56 : 176,656,252.54 = 69,274,440 : x - Step 2: Convert to fraction form
128,011,781.56/176,656,252.54 = 69,274,440/x - Step 3: Cross multiply
128,011,781.56x = 176,656,252.54 × 69,274,440 - Step 4: Simplify right side
128,011,781.56x = 12,237,762,967,207,078 - Step 5: Solve for x
x = 12,237,762,967,207,078/128,011,781.56 - Step 6: Final answer
x = 95,598,723.95
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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.