Home / 99,918.10-149,148.18-87,306.60

Finding the Fourth Proportional to 99,918.10, 149,148.18 and 87,306.60

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Solution

The fourth proportional to 99,918.10, 149,148.18 and 87,306.60 is: 130,322.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,918.10 : 149,148.18 = 87,306.60 : x
  2. Step 2: Convert to fraction form
    99,918.10/149,148.18 = 87,306.60/x
  3. Step 3: Cross multiply
    99,918.10x = 149,148.18 × 87,306.60
  4. Step 4: Simplify right side
    99,918.10x = 13,021,620,055.46
  5. Step 5: Solve for x
    x = 13,021,620,055.46/99,918.10
  6. Step 6: Final answer
    x = 130,322.94

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.