Home / 129,824.16-194,734.80-70,646.40

Finding the Fourth Proportional to 129,824.16, 194,734.80 and 70,646.40

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Solution

The fourth proportional to 129,824.16, 194,734.80 and 70,646.40 is: 105,968.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,824.16 : 194,734.80 = 70,646.40 : x
  2. Step 2: Convert to fraction form
    129,824.16/194,734.80 = 70,646.40/x
  3. Step 3: Cross multiply
    129,824.16x = 194,734.80 × 70,646.40
  4. Step 4: Simplify right side
    129,824.16x = 13,757,312,574.72
  5. Step 5: Solve for x
    x = 13,757,312,574.72/129,824.16
  6. Step 6: Final answer
    x = 105,968.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.