Home / 100,223.04-138,332.64-57,807.04

Finding the Fourth Proportional to 100,223.04, 138,332.64 and 57,807.04

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Solution

The fourth proportional to 100,223.04, 138,332.64 and 57,807.04 is: 79,788.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,223.04 : 138,332.64 = 57,807.04 : x
  2. Step 2: Convert to fraction form
    100,223.04/138,332.64 = 57,807.04/x
  3. Step 3: Cross multiply
    100,223.04x = 138,332.64 × 57,807.04
  4. Step 4: Simplify right side
    100,223.04x = 7,996,600,453.79
  5. Step 5: Solve for x
    x = 7,996,600,453.79/100,223.04
  6. Step 6: Final answer
    x = 79,788.05

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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.