Home / 121,048.60-181,529.70-42,165.40

Finding the Fourth Proportional to 121,048.60, 181,529.70 and 42,165.40

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Solution

The fourth proportional to 121,048.60, 181,529.70 and 42,165.40 is: 63,233.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,048.60 : 181,529.70 = 42,165.40 : x
  2. Step 2: Convert to fraction form
    121,048.60/181,529.70 = 42,165.40/x
  3. Step 3: Cross multiply
    121,048.60x = 181,529.70 × 42,165.40
  4. Step 4: Simplify right side
    121,048.60x = 7,654,272,412.38
  5. Step 5: Solve for x
    x = 7,654,272,412.38/121,048.60
  6. Step 6: Final answer
    x = 63,233.05

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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.