Finding the Fourth Proportional to 153,838,398.69, 212,297,612.18 and 84,230,256.51
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Solution
The fourth proportional to 153,838,398.69, 212,297,612.18 and 84,230,256.51 is: 116,238,094.53
Step by Step Solution
- Step 1: Write the proportion equation
153,838,398.69 : 212,297,612.18 = 84,230,256.51 : x - Step 2: Convert to fraction form
153,838,398.69/212,297,612.18 = 84,230,256.51/x - Step 3: Cross multiply
153,838,398.69x = 212,297,612.18 × 84,230,256.51 - Step 4: Simplify right side
153,838,398.69x = 17,881,882,329,960,752 - Step 5: Solve for x
x = 17,881,882,329,960,752/153,838,398.69 - Step 6: Final answer
x = 116,238,094.53
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.