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Finding the Fourth Proportional to 129,570.80, 178,746.60 and 75,822.84

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Solution

The fourth proportional to 129,570.80, 178,746.60 and 75,822.84 is: 104,599.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,570.80 : 178,746.60 = 75,822.84 : x
  2. Step 2: Convert to fraction form
    129,570.80/178,746.60 = 75,822.84/x
  3. Step 3: Cross multiply
    129,570.80x = 178,746.60 × 75,822.84
  4. Step 4: Simplify right side
    129,570.80x = 13,553,074,852.34
  5. Step 5: Solve for x
    x = 13,553,074,852.34/129,570.80
  6. Step 6: Final answer
    x = 104,599.76

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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.