Home / 134,628.66-185,748.90-86,909.16

Finding the Fourth Proportional to 134,628.66, 185,748.90 and 86,909.16

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Solution

The fourth proportional to 134,628.66, 185,748.90 and 86,909.16 is: 119,909.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,628.66 : 185,748.90 = 86,909.16 : x
  2. Step 2: Convert to fraction form
    134,628.66/185,748.90 = 86,909.16/x
  3. Step 3: Cross multiply
    134,628.66x = 185,748.90 × 86,909.16
  4. Step 4: Simplify right side
    134,628.66x = 16,143,280,869.92
  5. Step 5: Solve for x
    x = 16,143,280,869.92/134,628.66
  6. Step 6: Final answer
    x = 119,909.69

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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.