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Finding the Fourth Proportional to 79,658.40, 119,314.80 and 70,903.20

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Solution

The fourth proportional to 79,658.40, 119,314.80 and 70,903.20 is: 106,200.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,658.40 : 119,314.80 = 70,903.20 : x
  2. Step 2: Convert to fraction form
    79,658.40/119,314.80 = 70,903.20/x
  3. Step 3: Cross multiply
    79,658.40x = 119,314.80 × 70,903.20
  4. Step 4: Simplify right side
    79,658.40x = 8,459,801,127.36
  5. Step 5: Solve for x
    x = 8,459,801,127.36/79,658.40
  6. Step 6: Final answer
    x = 106,200.99

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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.