Home / 86,984.56-130,587-72,372.16

Finding the Fourth Proportional to 86,984.56, 130,587 and 72,372.16

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Solution

The fourth proportional to 86,984.56, 130,587 and 72,372.16 is: 108,649.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,984.56 : 130,587 = 72,372.16 : x
  2. Step 2: Convert to fraction form
    86,984.56/130,587 = 72,372.16/x
  3. Step 3: Cross multiply
    86,984.56x = 130,587 × 72,372.16
  4. Step 4: Simplify right side
    86,984.56x = 9,450,863,257.92
  5. Step 5: Solve for x
    x = 9,450,863,257.92/86,984.56
  6. Step 6: Final answer
    x = 108,649.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.