Home / 212,133.60-292,723.20-121,510.80

Finding the Fourth Proportional to 212,133.60, 292,723.20 and 121,510.80

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Solution

The fourth proportional to 212,133.60, 292,723.20 and 121,510.80 is: 167,672.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,133.60 : 292,723.20 = 121,510.80 : x
  2. Step 2: Convert to fraction form
    212,133.60/292,723.20 = 121,510.80/x
  3. Step 3: Cross multiply
    212,133.60x = 292,723.20 × 121,510.80
  4. Step 4: Simplify right side
    212,133.60x = 35,569,030,210.56
  5. Step 5: Solve for x
    x = 35,569,030,210.56/212,133.60
  6. Step 6: Final answer
    x = 167,672.78

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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.