Home / 102,011.36-140,766.71-56,686.47

Finding the Fourth Proportional to 102,011.36, 140,766.71 and 56,686.47

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Solution

The fourth proportional to 102,011.36, 140,766.71 and 56,686.47 is: 78,222.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,011.36 : 140,766.71 = 56,686.47 : x
  2. Step 2: Convert to fraction form
    102,011.36/140,766.71 = 56,686.47/x
  3. Step 3: Cross multiply
    102,011.36x = 140,766.71 × 56,686.47
  4. Step 4: Simplify right side
    102,011.36x = 7,979,567,599.98
  5. Step 5: Solve for x
    x = 7,979,567,599.98/102,011.36
  6. Step 6: Final answer
    x = 78,222.35

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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.