Home / 155,256.18-214,276.20-87,278.76

Finding the Fourth Proportional to 155,256.18, 214,276.20 and 87,278.76

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Solution

The fourth proportional to 155,256.18, 214,276.20 and 87,278.76 is: 120,457.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,256.18 : 214,276.20 = 87,278.76 : x
  2. Step 2: Convert to fraction form
    155,256.18/214,276.20 = 87,278.76/x
  3. Step 3: Cross multiply
    155,256.18x = 214,276.20 × 87,278.76
  4. Step 4: Simplify right side
    155,256.18x = 18,701,761,033.51
  5. Step 5: Solve for x
    x = 18,701,761,033.51/155,256.18
  6. Step 6: Final answer
    x = 120,457.43

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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.