Home / 145,552.36-200,864.10-81,890.28

Finding the Fourth Proportional to 145,552.36, 200,864.10 and 81,890.28

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Solution

The fourth proportional to 145,552.36, 200,864.10 and 81,890.28 is: 113,009.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,552.36 : 200,864.10 = 81,890.28 : x
  2. Step 2: Convert to fraction form
    145,552.36/200,864.10 = 81,890.28/x
  3. Step 3: Cross multiply
    145,552.36x = 200,864.10 × 81,890.28
  4. Step 4: Simplify right side
    145,552.36x = 16,448,817,390.95
  5. Step 5: Solve for x
    x = 16,448,817,390.95/145,552.36
  6. Step 6: Final answer
    x = 113,009.62

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.