Home / 79,931.20-119,277.20-66,107.20

Finding the Fourth Proportional to 79,931.20, 119,277.20 and 66,107.20

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Solution

The fourth proportional to 79,931.20, 119,277.20 and 66,107.20 is: 98,648.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,931.20 : 119,277.20 = 66,107.20 : x
  2. Step 2: Convert to fraction form
    79,931.20/119,277.20 = 66,107.20/x
  3. Step 3: Cross multiply
    79,931.20x = 119,277.20 × 66,107.20
  4. Step 4: Simplify right side
    79,931.20x = 7,885,081,715.84
  5. Step 5: Solve for x
    x = 7,885,081,715.84/79,931.20
  6. Step 6: Final answer
    x = 98,648.36

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1.5x scale

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.