Home / 102,125.85-140,930.29-56,802.55

Finding the Fourth Proportional to 102,125.85, 140,930.29 and 56,802.55

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Solution

The fourth proportional to 102,125.85, 140,930.29 and 56,802.55 is: 78,385.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,125.85 : 140,930.29 = 56,802.55 : x
  2. Step 2: Convert to fraction form
    102,125.85/140,930.29 = 56,802.55/x
  3. Step 3: Cross multiply
    102,125.85x = 140,930.29 × 56,802.55
  4. Step 4: Simplify right side
    102,125.85x = 8,005,199,844.24
  5. Step 5: Solve for x
    x = 8,005,199,844.24/102,125.85
  6. Step 6: Final answer
    x = 78,385.64

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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.