Finding the Fourth Proportional to 130,540,681.60, 180,149,538.24 and 71,804,859.84
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Solution
The fourth proportional to 130,540,681.60, 180,149,538.24 and 71,804,859.84 is: 99,092,575.47
Step by Step Solution
- Step 1: Write the proportion equation
130,540,681.60 : 180,149,538.24 = 71,804,859.84 : x - Step 2: Convert to fraction form
130,540,681.60/180,149,538.24 = 71,804,859.84/x - Step 3: Cross multiply
130,540,681.60x = 180,149,538.24 × 71,804,859.84 - Step 4: Simplify right side
130,540,681.60x = 12,935,612,343,563,922 - Step 5: Solve for x
x = 12,935,612,343,563,922/130,540,681.60 - Step 6: Final answer
x = 99,092,575.47
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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.