Home / 155,440.20-214,505.13-87,457.26

Finding the Fourth Proportional to 155,440.20, 214,505.13 and 87,457.26

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Solution

The fourth proportional to 155,440.20, 214,505.13 and 87,457.26 is: 120,689.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,440.20 : 214,505.13 = 87,457.26 : x
  2. Step 2: Convert to fraction form
    155,440.20/214,505.13 = 87,457.26/x
  3. Step 3: Cross multiply
    155,440.20x = 214,505.13 × 87,457.26
  4. Step 4: Simplify right side
    155,440.20x = 18,760,030,925.74
  5. Step 5: Solve for x
    x = 18,760,030,925.74/155,440.20
  6. Step 6: Final answer
    x = 120,689.70

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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.