Home / 212,140.47-292,817.10-139,599.30

Finding the Fourth Proportional to 212,140.47, 292,817.10 and 139,599.30

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Solution

The fourth proportional to 212,140.47, 292,817.10 and 139,599.30 is: 192,688.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,140.47 : 292,817.10 = 139,599.30 : x
  2. Step 2: Convert to fraction form
    212,140.47/292,817.10 = 139,599.30/x
  3. Step 3: Cross multiply
    212,140.47x = 292,817.10 × 139,599.30
  4. Step 4: Simplify right side
    212,140.47x = 40,877,062,188.03
  5. Step 5: Solve for x
    x = 40,877,062,188.03/212,140.47
  6. Step 6: Final answer
    x = 192,688.66

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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.