Home / 155,775.36-214,981.34-86,869.48

Finding the Fourth Proportional to 155,775.36, 214,981.34 and 86,869.48

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Solution

The fourth proportional to 155,775.36, 214,981.34 and 86,869.48 is: 119,886.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,775.36 : 214,981.34 = 86,869.48 : x
  2. Step 2: Convert to fraction form
    155,775.36/214,981.34 = 86,869.48/x
  3. Step 3: Cross multiply
    155,775.36x = 214,981.34 × 86,869.48
  4. Step 4: Simplify right side
    155,775.36x = 18,675,317,215.50
  5. Step 5: Solve for x
    x = 18,675,317,215.50/155,775.36
  6. Step 6: Final answer
    x = 119,886.21

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1.5x scale

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.