Finding the Fourth Proportional to 118,236,502.42, 163,163,212.07 and 65,312,071.01
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Solution
The fourth proportional to 118,236,502.42, 163,163,212.07 and 65,312,071.01 is: 90,128,911.75
Step by Step Solution
- Step 1: Write the proportion equation
118,236,502.42 : 163,163,212.07 = 65,312,071.01 : x - Step 2: Convert to fraction form
118,236,502.42/163,163,212.07 = 65,312,071.01/x - Step 3: Cross multiply
118,236,502.42x = 163,163,212.07 × 65,312,071.01 - Step 4: Simplify right side
118,236,502.42x = 10,656,527,291,793,152 - Step 5: Solve for x
x = 10,656,527,291,793,152/118,236,502.42 - Step 6: Final answer
x = 90,128,911.75
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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.