Finding the Fourth Proportional to 138,340,306.68, 190,909,461.45 and 75,616,816.59
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Solution
The fourth proportional to 138,340,306.68, 190,909,461.45 and 75,616,816.59 is: 104,351,118.46
Step by Step Solution
- Step 1: Write the proportion equation
138,340,306.68 : 190,909,461.45 = 75,616,816.59 : x - Step 2: Convert to fraction form
138,340,306.68/190,909,461.45 = 75,616,816.59/x - Step 3: Cross multiply
138,340,306.68x = 190,909,461.45 × 75,616,816.59 - Step 4: Simplify right side
138,340,306.68x = 14,435,965,730,805,776 - Step 5: Solve for x
x = 14,435,965,730,805,776/138,340,306.68 - Step 6: Final answer
x = 104,351,118.46
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1.5x scale
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.