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Finding the Fourth Proportional to 103,340.70, 155,011.05 and 101,958.30

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Solution

The fourth proportional to 103,340.70, 155,011.05 and 101,958.30 is: 152,937.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,340.70 : 155,011.05 = 101,958.30 : x
  2. Step 2: Convert to fraction form
    103,340.70/155,011.05 = 101,958.30/x
  3. Step 3: Cross multiply
    103,340.70x = 155,011.05 × 101,958.30
  4. Step 4: Simplify right side
    103,340.70x = 15,804,663,139.22
  5. Step 5: Solve for x
    x = 15,804,663,139.22/103,340.70
  6. Step 6: Final answer
    x = 152,937.45

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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.