Home / 104,435.40-144,121.59-56,688.75

Finding the Fourth Proportional to 104,435.40, 144,121.59 and 56,688.75

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Solution

The fourth proportional to 104,435.40, 144,121.59 and 56,688.75 is: 78,230.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,435.40 : 144,121.59 = 56,688.75 : x
  2. Step 2: Convert to fraction form
    104,435.40/144,121.59 = 56,688.75/x
  3. Step 3: Cross multiply
    104,435.40x = 144,121.59 × 56,688.75
  4. Step 4: Simplify right side
    104,435.40x = 8,170,072,785.11
  5. Step 5: Solve for x
    x = 8,170,072,785.11/104,435.40
  6. Step 6: Final answer
    x = 78,230.88

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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.