Home / 98,688.85-136,185.40-55,667.12

Finding the Fourth Proportional to 98,688.85, 136,185.40 and 55,667.12

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Solution

The fourth proportional to 98,688.85, 136,185.40 and 55,667.12 is: 76,817.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,688.85 : 136,185.40 = 55,667.12 : x
  2. Step 2: Convert to fraction form
    98,688.85/136,185.40 = 55,667.12/x
  3. Step 3: Cross multiply
    98,688.85x = 136,185.40 × 55,667.12
  4. Step 4: Simplify right side
    98,688.85x = 7,581,048,392.70
  5. Step 5: Solve for x
    x = 7,581,048,392.70/98,688.85
  6. Step 6: Final answer
    x = 76,817.68

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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.