Finding the Fourth Proportional to 135,803,938.08, 187,413,955.68 and 76,275,708.20
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Solution
The fourth proportional to 135,803,938.08, 187,413,955.68 and 76,275,708.20 is: 105,263,016.65
Step by Step Solution
- Step 1: Write the proportion equation
135,803,938.08 : 187,413,955.68 = 76,275,708.20 : x - Step 2: Convert to fraction form
135,803,938.08/187,413,955.68 = 76,275,708.20/x - Step 3: Cross multiply
135,803,938.08x = 187,413,955.68 × 76,275,708.20 - Step 4: Simplify right side
135,803,938.08x = 14,295,132,195,118,342 - Step 5: Solve for x
x = 14,295,132,195,118,342/135,803,938.08 - Step 6: Final answer
x = 105,263,016.65
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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.