Home / 104,135.72-143,707.08-56,389.20

Finding the Fourth Proportional to 104,135.72, 143,707.08 and 56,389.20

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Solution

The fourth proportional to 104,135.72, 143,707.08 and 56,389.20 is: 77,816.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,135.72 : 143,707.08 = 56,389.20 : x
  2. Step 2: Convert to fraction form
    104,135.72/143,707.08 = 56,389.20/x
  3. Step 3: Cross multiply
    104,135.72x = 143,707.08 × 56,389.20
  4. Step 4: Simplify right side
    104,135.72x = 8,103,527,275.54
  5. Step 5: Solve for x
    x = 8,103,527,275.54/104,135.72
  6. Step 6: Final answer
    x = 77,816.98

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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.