Finding the Fourth Proportional to 158,551,521,708.78, 218,805,746,212.93 and 86,298,266,386.17
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Solution
The fourth proportional to 158,551,521,708.78, 218,805,746,212.93 and 86,298,266,386.17 is: 119,094,136,530.53
Step by Step Solution
- Step 1: Write the proportion equation
158,551,521,708.78 : 218,805,746,212.93 = 86,298,266,386.17 : x - Step 2: Convert to fraction form
158,551,521,708.78/218,805,746,212.93 = 86,298,266,386.17/x - Step 3: Cross multiply
158,551,521,708.78x = 218,805,746,212.93 × 86,298,266,386.17 - Step 4: Simplify right side
158,551,521,708.78x = 18,882,556,573,508,140,269,568 - Step 5: Solve for x
x = 18,882,556,573,508,140,269,568/158,551,521,708.78 - Step 6: Final answer
x = 119,094,136,530.53
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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.