Home / 212,341.02-318,509.10-85,946.87

Finding the Fourth Proportional to 212,341.02, 318,509.10 and 85,946.87

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Solution

The fourth proportional to 212,341.02, 318,509.10 and 85,946.87 is: 128,919.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,341.02 : 318,509.10 = 85,946.87 : x
  2. Step 2: Convert to fraction form
    212,341.02/318,509.10 = 85,946.87/x
  3. Step 3: Cross multiply
    212,341.02x = 318,509.10 × 85,946.87
  4. Step 4: Simplify right side
    212,341.02x = 27,374,858,618.97
  5. Step 5: Solve for x
    x = 27,374,858,618.97/212,341.02
  6. Step 6: Final answer
    x = 128,919.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.