Finding the Fourth Proportional to 139,774,439.70, 209,661,659.55 and 138,924,134.10
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Solution
The fourth proportional to 139,774,439.70, 209,661,659.55 and 138,924,134.10 is: 208,386,201.15
Step by Step Solution
- Step 1: Write the proportion equation
139,774,439.70 : 209,661,659.55 = 138,924,134.10 : x - Step 2: Convert to fraction form
139,774,439.70/209,661,659.55 = 138,924,134.10/x - Step 3: Cross multiply
139,774,439.70x = 209,661,659.55 × 138,924,134.10 - Step 4: Simplify right side
139,774,439.70x = 29,127,064,506,952,748 - Step 5: Solve for x
x = 29,127,064,506,952,748/139,774,439.70 - Step 6: Final answer
x = 208,386,201.15
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.