Home / 98,619.40-147,929.10-28,505.80

Finding the Fourth Proportional to 98,619.40, 147,929.10 and 28,505.80

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Solution

The fourth proportional to 98,619.40, 147,929.10 and 28,505.80 is: 42,758.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,619.40 : 147,929.10 = 28,505.80 : x
  2. Step 2: Convert to fraction form
    98,619.40/147,929.10 = 28,505.80/x
  3. Step 3: Cross multiply
    98,619.40x = 147,929.10 × 28,505.80
  4. Step 4: Simplify right side
    98,619.40x = 4,216,837,338.78
  5. Step 5: Solve for x
    x = 4,216,837,338.78/98,619.40
  6. Step 6: Final answer
    x = 42,758.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.