Finding the Fourth Proportional to 83,390,139.54, 124,514,839.67 and 74,698,126.74
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Solution
The fourth proportional to 83,390,139.54, 124,514,839.67 and 74,698,126.74 is: 111,536,271.86
Step by Step Solution
- Step 1: Write the proportion equation
83,390,139.54 : 124,514,839.67 = 74,698,126.74 : x - Step 2: Convert to fraction form
83,390,139.54/124,514,839.67 = 74,698,126.74/x - Step 3: Cross multiply
83,390,139.54x = 124,514,839.67 × 74,698,126.74 - Step 4: Simplify right side
83,390,139.54x = 9,301,025,274,306,948 - Step 5: Solve for x
x = 9,301,025,274,306,948/83,390,139.54 - Step 6: Final answer
x = 111,536,271.86
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.