Finding the Fourth Proportional to 130,506,771.61, 180,048,371.99 and 74,722,378.60
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Solution
The fourth proportional to 130,506,771.61, 180,048,371.99 and 74,722,378.60 is: 103,087,697.69
Step by Step Solution
- Step 1: Write the proportion equation
130,506,771.61 : 180,048,371.99 = 74,722,378.60 : x - Step 2: Convert to fraction form
130,506,771.61/180,048,371.99 = 74,722,378.60/x - Step 3: Cross multiply
130,506,771.61x = 180,048,371.99 × 74,722,378.60 - Step 4: Simplify right side
130,506,771.61x = 13,453,642,617,250,174 - Step 5: Solve for x
x = 13,453,642,617,250,174/130,506,771.61 - Step 6: Final answer
x = 103,087,697.69
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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.