Home / 103,862.40-143,330.18-56,115.74

Finding the Fourth Proportional to 103,862.40, 143,330.18 and 56,115.74

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Solution

The fourth proportional to 103,862.40, 143,330.18 and 56,115.74 is: 77,439.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,862.40 : 143,330.18 = 56,115.74 : x
  2. Step 2: Convert to fraction form
    103,862.40/143,330.18 = 56,115.74/x
  3. Step 3: Cross multiply
    103,862.40x = 143,330.18 × 56,115.74
  4. Step 4: Simplify right side
    103,862.40x = 8,043,078,117.80
  5. Step 5: Solve for x
    x = 8,043,078,117.80/103,862.40
  6. Step 6: Final answer
    x = 77,439.75

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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.