Home / 125,130.50-172,683.25-76,759.10

Finding the Fourth Proportional to 125,130.50, 172,683.25 and 76,759.10

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Solution

The fourth proportional to 125,130.50, 172,683.25 and 76,759.10 is: 105,929.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,130.50 : 172,683.25 = 76,759.10 : x
  2. Step 2: Convert to fraction form
    125,130.50/172,683.25 = 76,759.10/x
  3. Step 3: Cross multiply
    125,130.50x = 172,683.25 × 76,759.10
  4. Step 4: Simplify right side
    125,130.50x = 13,255,011,148.88
  5. Step 5: Solve for x
    x = 13,255,011,148.88/125,130.50
  6. Step 6: Final answer
    x = 105,929.50

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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.