Home / 135,547.92-187,051.05-78,189.57

Finding the Fourth Proportional to 135,547.92, 187,051.05 and 78,189.57

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Solution

The fourth proportional to 135,547.92, 187,051.05 and 78,189.57 is: 107,898.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,547.92 : 187,051.05 = 78,189.57 : x
  2. Step 2: Convert to fraction form
    135,547.92/187,051.05 = 78,189.57/x
  3. Step 3: Cross multiply
    135,547.92x = 187,051.05 × 78,189.57
  4. Step 4: Simplify right side
    135,547.92x = 14,625,441,167.55
  5. Step 5: Solve for x
    x = 14,625,441,167.55/135,547.92
  6. Step 6: Final answer
    x = 107,898.68

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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.