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Finding the Fourth Proportional to 121,496.80, 182,111.55 and 42,570.40

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Solution

The fourth proportional to 121,496.80, 182,111.55 and 42,570.40 is: 63,808.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,496.80 : 182,111.55 = 42,570.40 : x
  2. Step 2: Convert to fraction form
    121,496.80/182,111.55 = 42,570.40/x
  3. Step 3: Cross multiply
    121,496.80x = 182,111.55 × 42,570.40
  4. Step 4: Simplify right side
    121,496.80x = 7,752,561,528.12
  5. Step 5: Solve for x
    x = 7,752,561,528.12/121,496.80
  6. Step 6: Final answer
    x = 63,808.77

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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.