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Finding the Fourth Proportional to 121,703.19, 182,548.71 and 42,818.10

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Solution

The fourth proportional to 121,703.19, 182,548.71 and 42,818.10 is: 64,225.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,703.19 : 182,548.71 = 42,818.10 : x
  2. Step 2: Convert to fraction form
    121,703.19/182,548.71 = 42,818.10/x
  3. Step 3: Cross multiply
    121,703.19x = 182,548.71 × 42,818.10
  4. Step 4: Simplify right side
    121,703.19x = 7,816,388,919.65
  5. Step 5: Solve for x
    x = 7,816,388,919.65/121,703.19
  6. Step 6: Final answer
    x = 64,225.01

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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.