Finding the Fourth Proportional to 86,208,090.80, 129,312,136.20 and 76,854,729.20
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Solution
The fourth proportional to 86,208,090.80, 129,312,136.20 and 76,854,729.20 is: 115,282,093.80
Step by Step Solution
- Step 1: Write the proportion equation
86,208,090.80 : 129,312,136.20 = 76,854,729.20 : x - Step 2: Convert to fraction form
86,208,090.80/129,312,136.20 = 76,854,729.20/x - Step 3: Cross multiply
86,208,090.80x = 129,312,136.20 × 76,854,729.20 - Step 4: Simplify right side
86,208,090.80x = 9,938,249,209,924,518 - Step 5: Solve for x
x = 9,938,249,209,924,518/86,208,090.80 - Step 6: Final answer
x = 115,282,093.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.