Home / 119,928.64-165,515.52-99,749.92

Finding the Fourth Proportional to 119,928.64, 165,515.52 and 99,749.92

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Solution

The fourth proportional to 119,928.64, 165,515.52 and 99,749.92 is: 137,666.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,928.64 : 165,515.52 = 99,749.92 : x
  2. Step 2: Convert to fraction form
    119,928.64/165,515.52 = 99,749.92/x
  3. Step 3: Cross multiply
    119,928.64x = 165,515.52 × 99,749.92
  4. Step 4: Simplify right side
    119,928.64x = 16,510,159,878.76
  5. Step 5: Solve for x
    x = 16,510,159,878.76/119,928.64
  6. Step 6: Final answer
    x = 137,666.53

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.