Home / 139,648.16-192,711.12-75,985.76

Finding the Fourth Proportional to 139,648.16, 192,711.12 and 75,985.76

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Solution

The fourth proportional to 139,648.16, 192,711.12 and 75,985.76 is: 104,858.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,648.16 : 192,711.12 = 75,985.76 : x
  2. Step 2: Convert to fraction form
    139,648.16/192,711.12 = 75,985.76/x
  3. Step 3: Cross multiply
    139,648.16x = 192,711.12 × 75,985.76
  4. Step 4: Simplify right side
    139,648.16x = 14,643,300,913.65
  5. Step 5: Solve for x
    x = 14,643,300,913.65/139,648.16
  6. Step 6: Final answer
    x = 104,858.53

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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.