Home / 102,011.16-140,776.18-56,693.39

Finding the Fourth Proportional to 102,011.16, 140,776.18 and 56,693.39

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Solution

The fourth proportional to 102,011.16, 140,776.18 and 56,693.39 is: 78,237.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,011.16 : 140,776.18 = 56,693.39 : x
  2. Step 2: Convert to fraction form
    102,011.16/140,776.18 = 56,693.39/x
  3. Step 3: Cross multiply
    102,011.16x = 140,776.18 × 56,693.39
  4. Step 4: Simplify right side
    102,011.16x = 7,981,079,085.66
  5. Step 5: Solve for x
    x = 7,981,079,085.66/102,011.16
  6. Step 6: Final answer
    x = 78,237.31

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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.