Finding the Fourth Proportional to 130,824,285.69, 180,529,379.70 and 72,083,663.63
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Solution
The fourth proportional to 130,824,285.69, 180,529,379.70 and 72,083,663.63 is: 99,470,973.70
Step by Step Solution
- Step 1: Write the proportion equation
130,824,285.69 : 180,529,379.70 = 72,083,663.63 : x - Step 2: Convert to fraction form
130,824,285.69/180,529,379.70 = 72,083,663.63/x - Step 3: Cross multiply
130,824,285.69x = 180,529,379.70 × 72,083,663.63 - Step 4: Simplify right side
130,824,285.69x = 13,013,219,081,627,348 - Step 5: Solve for x
x = 13,013,219,081,627,348/130,824,285.69 - Step 6: Final answer
x = 99,470,973.70
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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.