Finding the Fourth Proportional to 101,689.98, 140,248.98 and 71,574.99
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Solution
The fourth proportional to 101,689.98, 140,248.98 and 71,574.99 is: 98,714.93
Step by Step Solution
- Step 1: Write the proportion equation
101,689.98 : 140,248.98 = 71,574.99 : x - Step 2: Convert to fraction form
101,689.98/140,248.98 = 71,574.99/x - Step 3: Cross multiply
101,689.98x = 140,248.98 × 71,574.99 - Step 4: Simplify right side
101,689.98x = 10,038,319,341.01 - Step 5: Solve for x
x = 10,038,319,341.01/101,689.98 - Step 6: Final answer
x = 98,714.93
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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.