Home / 129,439-193,878.06-62,739.60

Finding the Fourth Proportional to 129,439, 193,878.06 and 62,739.60

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Solution

The fourth proportional to 129,439, 193,878.06 and 62,739.60 is: 93,973.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,439 : 193,878.06 = 62,739.60 : x
  2. Step 2: Convert to fraction form
    129,439/193,878.06 = 62,739.60/x
  3. Step 3: Cross multiply
    129,439x = 193,878.06 × 62,739.60
  4. Step 4: Simplify right side
    129,439x = 12,163,831,933.18
  5. Step 5: Solve for x
    x = 12,163,831,933.18/129,439
  6. Step 6: Final answer
    x = 93,973.47

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1.5x scale

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.