Home / 89,931.96-135,051.02-86,170.32

Finding the Fourth Proportional to 89,931.96, 135,051.02 and 86,170.32

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Solution

The fourth proportional to 89,931.96, 135,051.02 and 86,170.32 is: 129,402.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,931.96 : 135,051.02 = 86,170.32 : x
  2. Step 2: Convert to fraction form
    89,931.96/135,051.02 = 86,170.32/x
  3. Step 3: Cross multiply
    89,931.96x = 135,051.02 × 86,170.32
  4. Step 4: Simplify right side
    89,931.96x = 11,637,389,609.73
  5. Step 5: Solve for x
    x = 11,637,389,609.73/89,931.96
  6. Step 6: Final answer
    x = 129,402.16

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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.