Finding the Fourth Proportional to 121,626,488.91, 167,844,501.68 and 65,871,911.87
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Solution
The fourth proportional to 121,626,488.91, 167,844,501.68 and 65,871,911.87 is: 90,903,209.67
Step by Step Solution
- Step 1: Write the proportion equation
121,626,488.91 : 167,844,501.68 = 65,871,911.87 : x - Step 2: Convert to fraction form
121,626,488.91/167,844,501.68 = 65,871,911.87/x - Step 3: Cross multiply
121,626,488.91x = 167,844,501.68 × 65,871,911.87 - Step 4: Simplify right side
121,626,488.91x = 11,056,238,222,529,026 - Step 5: Solve for x
x = 11,056,238,222,529,026/121,626,488.91 - Step 6: Final answer
x = 90,903,209.67
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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.