Finding the Fourth Proportional to 98,926,658.60, 136,516,154.80 and 57,109,312.68
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Solution
The fourth proportional to 98,926,658.60, 136,516,154.80 and 57,109,312.68 is: 78,809,330.88
Step by Step Solution
- Step 1: Write the proportion equation
98,926,658.60 : 136,516,154.80 = 57,109,312.68 : x - Step 2: Convert to fraction form
98,926,658.60/136,516,154.80 = 57,109,312.68/x - Step 3: Cross multiply
98,926,658.60x = 136,516,154.80 × 57,109,312.68 - Step 4: Simplify right side
98,926,658.60x = 7,796,343,770,344,484 - Step 5: Solve for x
x = 7,796,343,770,344,484/98,926,658.60 - Step 6: Final answer
x = 78,809,330.88
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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.