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Finding the Fourth Proportional to 101,709.60, 152,564.40 and 70,216.80

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Solution

The fourth proportional to 101,709.60, 152,564.40 and 70,216.80 is: 105,325.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,709.60 : 152,564.40 = 70,216.80 : x
  2. Step 2: Convert to fraction form
    101,709.60/152,564.40 = 70,216.80/x
  3. Step 3: Cross multiply
    101,709.60x = 152,564.40 × 70,216.80
  4. Step 4: Simplify right side
    101,709.60x = 10,712,583,961.92
  5. Step 5: Solve for x
    x = 10,712,583,961.92/101,709.60
  6. Step 6: Final answer
    x = 105,325.20

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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.