Home / 103,874.74-143,347.04-56,128.07

Finding the Fourth Proportional to 103,874.74, 143,347.04 and 56,128.07

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Solution

The fourth proportional to 103,874.74, 143,347.04 and 56,128.07 is: 77,456.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,874.74 : 143,347.04 = 56,128.07 : x
  2. Step 2: Convert to fraction form
    103,874.74/143,347.04 = 56,128.07/x
  3. Step 3: Cross multiply
    103,874.74x = 143,347.04 × 56,128.07
  4. Step 4: Simplify right side
    103,874.74x = 8,045,792,695.41
  5. Step 5: Solve for x
    x = 8,045,792,695.41/103,874.74
  6. Step 6: Final answer
    x = 77,456.68

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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.