Home / 124,040.40-171,256.08-78,166.20

Finding the Fourth Proportional to 124,040.40, 171,256.08 and 78,166.20

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Solution

The fourth proportional to 124,040.40, 171,256.08 and 78,166.20 is: 107,919.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,040.40 : 171,256.08 = 78,166.20 : x
  2. Step 2: Convert to fraction form
    124,040.40/171,256.08 = 78,166.20/x
  3. Step 3: Cross multiply
    124,040.40x = 171,256.08 × 78,166.20
  4. Step 4: Simplify right side
    124,040.40x = 13,386,437,000.50
  5. Step 5: Solve for x
    x = 13,386,437,000.50/124,040.40
  6. Step 6: Final answer
    x = 107,919.98

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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.