Home / 102,937.20-154,405.80-71,444.40

Finding the Fourth Proportional to 102,937.20, 154,405.80 and 71,444.40

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Solution

The fourth proportional to 102,937.20, 154,405.80 and 71,444.40 is: 107,166.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,937.20 : 154,405.80 = 71,444.40 : x
  2. Step 2: Convert to fraction form
    102,937.20/154,405.80 = 71,444.40/x
  3. Step 3: Cross multiply
    102,937.20x = 154,405.80 × 71,444.40
  4. Step 4: Simplify right side
    102,937.20x = 11,031,429,737.52
  5. Step 5: Solve for x
    x = 11,031,429,737.52/102,937.20
  6. Step 6: Final answer
    x = 107,166.60

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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.