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Finding the Fourth Proportional to 86,715.60, 130,073.40 and 67,032.60

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Solution

The fourth proportional to 86,715.60, 130,073.40 and 67,032.60 is: 100,548.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,715.60 : 130,073.40 = 67,032.60 : x
  2. Step 2: Convert to fraction form
    86,715.60/130,073.40 = 67,032.60/x
  3. Step 3: Cross multiply
    86,715.60x = 130,073.40 × 67,032.60
  4. Step 4: Simplify right side
    86,715.60x = 8,719,158,192.84
  5. Step 5: Solve for x
    x = 8,719,158,192.84/86,715.60
  6. Step 6: Final answer
    x = 100,548.90

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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.