Home / 135,089.29-186,446.37-78,533.47

Finding the Fourth Proportional to 135,089.29, 186,446.37 and 78,533.47

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Solution

The fourth proportional to 135,089.29, 186,446.37 and 78,533.47 is: 108,389.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,089.29 : 186,446.37 = 78,533.47 : x
  2. Step 2: Convert to fraction form
    135,089.29/186,446.37 = 78,533.47/x
  3. Step 3: Cross multiply
    135,089.29x = 186,446.37 × 78,533.47
  4. Step 4: Simplify right side
    135,089.29x = 14,642,280,405.00
  5. Step 5: Solve for x
    x = 14,642,280,405.00/135,089.29
  6. Step 6: Final answer
    x = 108,389.65

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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.