Home / 129,051.15-178,119.05-71,710.17

Finding the Fourth Proportional to 129,051.15, 178,119.05 and 71,710.17

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Solution

The fourth proportional to 129,051.15, 178,119.05 and 71,710.17 is: 98,975.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,051.15 : 178,119.05 = 71,710.17 : x
  2. Step 2: Convert to fraction form
    129,051.15/178,119.05 = 71,710.17/x
  3. Step 3: Cross multiply
    129,051.15x = 178,119.05 × 71,710.17
  4. Step 4: Simplify right side
    129,051.15x = 12,772,947,355.74
  5. Step 5: Solve for x
    x = 12,772,947,355.74/129,051.15
  6. Step 6: Final answer
    x = 98,975.85

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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.