Home / 103,855.40-143,320.27-56,108.60

Finding the Fourth Proportional to 103,855.40, 143,320.27 and 56,108.60

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Solution

The fourth proportional to 103,855.40, 143,320.27 and 56,108.60 is: 77,429.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,855.40 : 143,320.27 = 56,108.60 : x
  2. Step 2: Convert to fraction form
    103,855.40/143,320.27 = 56,108.60/x
  3. Step 3: Cross multiply
    103,855.40x = 143,320.27 × 56,108.60
  4. Step 4: Simplify right side
    103,855.40x = 8,041,499,487.10
  5. Step 5: Solve for x
    x = 8,041,499,487.10/103,855.40
  6. Step 6: Final answer
    x = 77,429.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.