Home / 100,775.36-139,088.40-58,337.84

Finding the Fourth Proportional to 100,775.36, 139,088.40 and 58,337.84

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Solution

The fourth proportional to 100,775.36, 139,088.40 and 58,337.84 is: 80,516.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,775.36 : 139,088.40 = 58,337.84 : x
  2. Step 2: Convert to fraction form
    100,775.36/139,088.40 = 58,337.84/x
  3. Step 3: Cross multiply
    100,775.36x = 139,088.40 × 58,337.84
  4. Step 4: Simplify right side
    100,775.36x = 8,114,116,825.06
  5. Step 5: Solve for x
    x = 8,114,116,825.06/100,775.36
  6. Step 6: Final answer
    x = 80,516.87

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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.