Finding the Fourth Proportional to 145,528,305.30, 218,292,457.95 and 72,756,317.70
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Solution
The fourth proportional to 145,528,305.30, 218,292,457.95 and 72,756,317.70 is: 109,134,476.55
Step by Step Solution
- Step 1: Write the proportion equation
145,528,305.30 : 218,292,457.95 = 72,756,317.70 : x - Step 2: Convert to fraction form
145,528,305.30/218,292,457.95 = 72,756,317.70/x - Step 3: Cross multiply
145,528,305.30x = 218,292,457.95 × 72,756,317.70 - Step 4: Simplify right side
145,528,305.30x = 15,882,155,422,124,090 - Step 5: Solve for x
x = 15,882,155,422,124,090/145,528,305.30 - Step 6: Final answer
x = 109,134,476.55
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.