Home / 119,856.47-165,332.09-76,820.63

Finding the Fourth Proportional to 119,856.47, 165,332.09 and 76,820.63

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Solution

The fourth proportional to 119,856.47, 165,332.09 and 76,820.63 is: 105,967.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,856.47 : 165,332.09 = 76,820.63 : x
  2. Step 2: Convert to fraction form
    119,856.47/165,332.09 = 76,820.63/x
  3. Step 3: Cross multiply
    119,856.47x = 165,332.09 × 76,820.63
  4. Step 4: Simplify right side
    119,856.47x = 12,700,915,313.02
  5. Step 5: Solve for x
    x = 12,700,915,313.02/119,856.47
  6. Step 6: Final answer
    x = 105,967.71

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1.5x scale

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.