Home / 125,140.90-172,693.06-67,778.79

Finding the Fourth Proportional to 125,140.90, 172,693.06 and 67,778.79

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Solution

The fourth proportional to 125,140.90, 172,693.06 and 67,778.79 is: 93,533.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,140.90 : 172,693.06 = 67,778.79 : x
  2. Step 2: Convert to fraction form
    125,140.90/172,693.06 = 67,778.79/x
  3. Step 3: Cross multiply
    125,140.90x = 172,693.06 × 67,778.79
  4. Step 4: Simplify right side
    125,140.90x = 11,704,926,478.75
  5. Step 5: Solve for x
    x = 11,704,926,478.75/125,140.90
  6. Step 6: Final answer
    x = 93,533.98

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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.