Home / 102,155.84-140,976.35-56,220.77

Finding the Fourth Proportional to 102,155.84, 140,976.35 and 56,220.77

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Solution

The fourth proportional to 102,155.84, 140,976.35 and 56,220.77 is: 77,585.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,155.84 : 140,976.35 = 56,220.77 : x
  2. Step 2: Convert to fraction form
    102,155.84/140,976.35 = 56,220.77/x
  3. Step 3: Cross multiply
    102,155.84x = 140,976.35 × 56,220.77
  4. Step 4: Simplify right side
    102,155.84x = 7,925,798,948.79
  5. Step 5: Solve for x
    x = 7,925,798,948.79/102,155.84
  6. Step 6: Final answer
    x = 77,585.37

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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.