Finding the Fourth Proportional to 103,203.19, 142,421.58 and 57,263.67
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Solution
The fourth proportional to 103,203.19, 142,421.58 and 57,263.67 is: 79,024.52
Step by Step Solution
- Step 1: Write the proportion equation
103,203.19 : 142,421.58 = 57,263.67 : x - Step 2: Convert to fraction form
103,203.19/142,421.58 = 57,263.67/x - Step 3: Cross multiply
103,203.19x = 142,421.58 × 57,263.67 - Step 4: Simplify right side
103,203.19x = 8,155,582,358.00 - Step 5: Solve for x
x = 8,155,582,358.00/103,203.19 - Step 6: Final answer
x = 79,024.52
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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.