Home / 124,970.40-187,455.60-80,647.20

Finding the Fourth Proportional to 124,970.40, 187,455.60 and 80,647.20

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Solution

The fourth proportional to 124,970.40, 187,455.60 and 80,647.20 is: 120,970.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,970.40 : 187,455.60 = 80,647.20 : x
  2. Step 2: Convert to fraction form
    124,970.40/187,455.60 = 80,647.20/x
  3. Step 3: Cross multiply
    124,970.40x = 187,455.60 × 80,647.20
  4. Step 4: Simplify right side
    124,970.40x = 15,117,769,264.32
  5. Step 5: Solve for x
    x = 15,117,769,264.32/124,970.40
  6. Step 6: Final answer
    x = 120,970.80

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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.