Home / 98,305.86-147,434.48-42,139.60

Finding the Fourth Proportional to 98,305.86, 147,434.48 and 42,139.60

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Solution

The fourth proportional to 98,305.86, 147,434.48 and 42,139.60 is: 63,198.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,305.86 : 147,434.48 = 42,139.60 : x
  2. Step 2: Convert to fraction form
    98,305.86/147,434.48 = 42,139.60/x
  3. Step 3: Cross multiply
    98,305.86x = 147,434.48 × 42,139.60
  4. Step 4: Simplify right side
    98,305.86x = 6,212,830,013.41
  5. Step 5: Solve for x
    x = 6,212,830,013.41/98,305.86
  6. Step 6: Final answer
    x = 63,198.98

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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.