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Finding the Fourth Proportional to 144,187.38, 216,368.82 and 55,448.64

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Solution

The fourth proportional to 144,187.38, 216,368.82 and 55,448.64 is: 83,206.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,187.38 : 216,368.82 = 55,448.64 : x
  2. Step 2: Convert to fraction form
    144,187.38/216,368.82 = 55,448.64/x
  3. Step 3: Cross multiply
    144,187.38x = 216,368.82 × 55,448.64
  4. Step 4: Simplify right side
    144,187.38x = 11,997,356,807.40
  5. Step 5: Solve for x
    x = 11,997,356,807.40/144,187.38
  6. Step 6: Final answer
    x = 83,206.71

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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.