Finding the Fourth Proportional to 128,637,758.07, 177,521,082.10 and 69,900,739.70
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Solution
The fourth proportional to 128,637,758.07, 177,521,082.10 and 69,900,739.70 is: 96,463,551.11
Step by Step Solution
- Step 1: Write the proportion equation
128,637,758.07 : 177,521,082.10 = 69,900,739.70 : x - Step 2: Convert to fraction form
128,637,758.07/177,521,082.10 = 69,900,739.70/x - Step 3: Cross multiply
128,637,758.07x = 177,521,082.10 × 69,900,739.70 - Step 4: Simplify right side
128,637,758.07x = 12,408,854,950,072,070 - Step 5: Solve for x
x = 12,408,854,950,072,070/128,637,758.07 - Step 6: Final answer
x = 96,463,551.11
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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.