Home / 99,814.60-149,721.90-89,973.10

Finding the Fourth Proportional to 99,814.60, 149,721.90 and 89,973.10

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Solution

The fourth proportional to 99,814.60, 149,721.90 and 89,973.10 is: 134,959.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,814.60 : 149,721.90 = 89,973.10 : x
  2. Step 2: Convert to fraction form
    99,814.60/149,721.90 = 89,973.10/x
  3. Step 3: Cross multiply
    99,814.60x = 149,721.90 × 89,973.10
  4. Step 4: Simplify right side
    99,814.60x = 13,470,943,480.89
  5. Step 5: Solve for x
    x = 13,470,943,480.89/99,814.60
  6. Step 6: Final answer
    x = 134,959.65

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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.