Finding the Fourth Proportional to 155,925,598.97, 215,177,330.87 and 86,310,979.86
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Solution
The fourth proportional to 155,925,598.97, 215,177,330.87 and 86,310,979.86 is: 119,109,154.58
Step by Step Solution
- Step 1: Write the proportion equation
155,925,598.97 : 215,177,330.87 = 86,310,979.86 : x - Step 2: Convert to fraction form
155,925,598.97/215,177,330.87 = 86,310,979.86/x - Step 3: Cross multiply
155,925,598.97x = 215,177,330.87 × 86,310,979.86 - Step 4: Simplify right side
155,925,598.97x = 18,572,166,271,748,152 - Step 5: Solve for x
x = 18,572,166,271,748,152/155,925,598.97 - Step 6: Final answer
x = 119,109,154.58
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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.