Finding the Fourth Proportional to 121,117,931.80, 181,460,384.70 and 73,708,145.80
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Solution
The fourth proportional to 121,117,931.80, 181,460,384.70 and 73,708,145.80 is: 110,430,456.45
Step by Step Solution
- Step 1: Write the proportion equation
121,117,931.80 : 181,460,384.70 = 73,708,145.80 : x - Step 2: Convert to fraction form
121,117,931.80/181,460,384.70 = 73,708,145.80/x - Step 3: Cross multiply
121,117,931.80x = 181,460,384.70 × 73,708,145.80 - Step 4: Simplify right side
121,117,931.80x = 13,375,108,492,391,688 - Step 5: Solve for x
x = 13,375,108,492,391,688/121,117,931.80 - Step 6: Final answer
x = 110,430,456.45
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.