Finding the Fourth Proportional to 98,173,900.35, 135,480,391.70 and 54,119,931.39
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Solution
The fourth proportional to 98,173,900.35, 135,480,391.70 and 54,119,931.39 is: 74,685,730.90
Step by Step Solution
- Step 1: Write the proportion equation
98,173,900.35 : 135,480,391.70 = 54,119,931.39 : x - Step 2: Convert to fraction form
98,173,900.35/135,480,391.70 = 54,119,931.39/x - Step 3: Cross multiply
98,173,900.35x = 135,480,391.70 × 54,119,931.39 - Step 4: Simplify right side
98,173,900.35x = 7,332,189,503,223,725 - Step 5: Solve for x
x = 7,332,189,503,223,725/98,173,900.35 - Step 6: Final answer
x = 74,685,730.90
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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.