Finding the Fourth Proportional to 157,031,730.22, 216,705,391.38 and 86,473,901.75
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Solution
The fourth proportional to 157,031,730.22, 216,705,391.38 and 86,473,901.75 is: 119,334,867.51
Step by Step Solution
- Step 1: Write the proportion equation
157,031,730.22 : 216,705,391.38 = 86,473,901.75 : x - Step 2: Convert to fraction form
157,031,730.22/216,705,391.38 = 86,473,901.75/x - Step 3: Cross multiply
157,031,730.22x = 216,705,391.38 × 86,473,901.75 - Step 4: Simplify right side
157,031,730.22x = 18,739,360,721,868,020 - Step 5: Solve for x
x = 18,739,360,721,868,020/157,031,730.22 - Step 6: Final answer
x = 119,334,867.51
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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.