Home / 98,931.98-148,402.13-28,811.30

Finding the Fourth Proportional to 98,931.98, 148,402.13 and 28,811.30

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Solution

The fourth proportional to 98,931.98, 148,402.13 and 28,811.30 is: 43,218.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,931.98 : 148,402.13 = 28,811.30 : x
  2. Step 2: Convert to fraction form
    98,931.98/148,402.13 = 28,811.30/x
  3. Step 3: Cross multiply
    98,931.98x = 148,402.13 × 28,811.30
  4. Step 4: Simplify right side
    98,931.98x = 4,275,657,402.00
  5. Step 5: Solve for x
    x = 4,275,657,402.00/98,931.98
  6. Step 6: Final answer
    x = 43,218.15

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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.