Home / 212,455.60-293,177.28-121,807.20

Finding the Fourth Proportional to 212,455.60, 293,177.28 and 121,807.20

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Solution

The fourth proportional to 212,455.60, 293,177.28 and 121,807.20 is: 168,087.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,455.60 : 293,177.28 = 121,807.20 : x
  2. Step 2: Convert to fraction form
    212,455.60/293,177.28 = 121,807.20/x
  3. Step 3: Cross multiply
    212,455.60x = 293,177.28 × 121,807.20
  4. Step 4: Simplify right side
    212,455.60x = 35,711,103,580.42
  5. Step 5: Solve for x
    x = 35,711,103,580.42/212,455.60
  6. Step 6: Final answer
    x = 168,087.37

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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.