Home / 212,029.79-318,044.88-99,627.57

Finding the Fourth Proportional to 212,029.79, 318,044.88 and 99,627.57

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Solution

The fourth proportional to 212,029.79, 318,044.88 and 99,627.57 is: 149,441.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,029.79 : 318,044.88 = 99,627.57 : x
  2. Step 2: Convert to fraction form
    212,029.79/318,044.88 = 99,627.57/x
  3. Step 3: Cross multiply
    212,029.79x = 318,044.88 × 99,627.57
  4. Step 4: Simplify right side
    212,029.79x = 31,686,038,545.34
  5. Step 5: Solve for x
    x = 31,686,038,545.34/212,029.79
  6. Step 6: Final answer
    x = 149,441.45

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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.