Home / 155,769.12-214,965.81-86,860.17

Finding the Fourth Proportional to 155,769.12, 214,965.81 and 86,860.17

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Solution

The fourth proportional to 155,769.12, 214,965.81 and 86,860.17 is: 119,869.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,769.12 : 214,965.81 = 86,860.17 : x
  2. Step 2: Convert to fraction form
    155,769.12/214,965.81 = 86,860.17/x
  3. Step 3: Cross multiply
    155,769.12x = 214,965.81 × 86,860.17
  4. Step 4: Simplify right side
    155,769.12x = 18,671,966,800.79
  5. Step 5: Solve for x
    x = 18,671,966,800.79/155,769.12
  6. Step 6: Final answer
    x = 119,869.50

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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.