Finding the Fourth Proportional to 128,158,819.90, 176,860,020.61 and 69,421,484.99
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Solution
The fourth proportional to 128,158,819.90, 176,860,020.61 and 69,421,484.99 is: 95,802,109.26
Step by Step Solution
- Step 1: Write the proportion equation
128,158,819.90 : 176,860,020.61 = 69,421,484.99 : x - Step 2: Convert to fraction form
128,158,819.90/176,860,020.61 = 69,421,484.99/x - Step 3: Cross multiply
128,158,819.90x = 176,860,020.61 × 69,421,484.99 - Step 4: Simplify right side
128,158,819.90x = 12,277,885,266,637,134 - Step 5: Solve for x
x = 12,277,885,266,637,134/128,158,819.90 - Step 6: Final answer
x = 95,802,109.26
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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.