Home / 99,188.09-148,802.72-45,127.02

Finding the Fourth Proportional to 99,188.09, 148,802.72 and 45,127.02

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Solution

The fourth proportional to 99,188.09, 148,802.72 and 45,127.02 is: 67,699.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,188.09 : 148,802.72 = 45,127.02 : x
  2. Step 2: Convert to fraction form
    99,188.09/148,802.72 = 45,127.02/x
  3. Step 3: Cross multiply
    99,188.09x = 148,802.72 × 45,127.02
  4. Step 4: Simplify right side
    99,188.09x = 6,715,023,907.71
  5. Step 5: Solve for x
    x = 6,715,023,907.71/99,188.09
  6. Step 6: Final answer
    x = 67,699.90

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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.