Finding the Fourth Proportional to 105,288,474.28, 145,249,132.80 and 68,130,763.44
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Solution
The fourth proportional to 105,288,474.28, 145,249,132.80 and 68,130,763.44 is: 93,988,771.08
Step by Step Solution
- Step 1: Write the proportion equation
105,288,474.28 : 145,249,132.80 = 68,130,763.44 : x - Step 2: Convert to fraction form
105,288,474.28/145,249,132.80 = 68,130,763.44/x - Step 3: Cross multiply
105,288,474.28x = 145,249,132.80 × 68,130,763.44 - Step 4: Simplify right side
105,288,474.28x = 9,895,934,306,661,946 - Step 5: Solve for x
x = 9,895,934,306,661,946/105,288,474.28 - Step 6: Final answer
x = 93,988,771.08
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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.