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Finding the Fourth Proportional to 121,075.61, 181,613.11 and 57,703.64

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Solution

The fourth proportional to 121,075.61, 181,613.11 and 57,703.64 is: 86,555.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,075.61 : 181,613.11 = 57,703.64 : x
  2. Step 2: Convert to fraction form
    121,075.61/181,613.11 = 57,703.64/x
  3. Step 3: Cross multiply
    121,075.61x = 181,613.11 × 57,703.64
  4. Step 4: Simplify right side
    121,075.61x = 10,479,737,518.72
  5. Step 5: Solve for x
    x = 10,479,737,518.72/121,075.61
  6. Step 6: Final answer
    x = 86,555.31

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1.5x scale

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.