Home / 155,388.66-214,430.13-87,406.98

Finding the Fourth Proportional to 155,388.66, 214,430.13 and 87,406.98

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Solution

The fourth proportional to 155,388.66, 214,430.13 and 87,406.98 is: 120,618.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,388.66 : 214,430.13 = 87,406.98 : x
  2. Step 2: Convert to fraction form
    155,388.66/214,430.13 = 87,406.98/x
  3. Step 3: Cross multiply
    155,388.66x = 214,430.13 × 87,406.98
  4. Step 4: Simplify right side
    155,388.66x = 18,742,690,084.31
  5. Step 5: Solve for x
    x = 18,742,690,084.31/155,388.66
  6. Step 6: Final answer
    x = 120,618.13

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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.