Home / 102,159.20-140,977-56,834.88

Finding the Fourth Proportional to 102,159.20, 140,977 and 56,834.88

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Solution

The fourth proportional to 102,159.20, 140,977 and 56,834.88 is: 78,430.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,159.20 : 140,977 = 56,834.88 : x
  2. Step 2: Convert to fraction form
    102,159.20/140,977 = 56,834.88/x
  3. Step 3: Cross multiply
    102,159.20x = 140,977 × 56,834.88
  4. Step 4: Simplify right side
    102,159.20x = 8,012,410,877.76
  5. Step 5: Solve for x
    x = 8,012,410,877.76/102,159.20
  6. Step 6: Final answer
    x = 78,430.63

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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.