Home / 103,855.06-143,320.05-56,108.38

Finding the Fourth Proportional to 103,855.06, 143,320.05 and 56,108.38

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Solution

The fourth proportional to 103,855.06, 143,320.05 and 56,108.38 is: 77,429.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,855.06 : 143,320.05 = 56,108.38 : x
  2. Step 2: Convert to fraction form
    103,855.06/143,320.05 = 56,108.38/x
  3. Step 3: Cross multiply
    103,855.06x = 143,320.05 × 56,108.38
  4. Step 4: Simplify right side
    103,855.06x = 8,041,455,827.02
  5. Step 5: Solve for x
    x = 8,041,455,827.02/103,855.06
  6. Step 6: Final answer
    x = 77,429.60

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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.