Home / 212,629.02-319,069.12-77,681.10

Finding the Fourth Proportional to 212,629.02, 319,069.12 and 77,681.10

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Solution

The fourth proportional to 212,629.02, 319,069.12 and 77,681.10 is: 116,567.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,629.02 : 319,069.12 = 77,681.10 : x
  2. Step 2: Convert to fraction form
    212,629.02/319,069.12 = 77,681.10/x
  3. Step 3: Cross multiply
    212,629.02x = 319,069.12 × 77,681.10
  4. Step 4: Simplify right side
    212,629.02x = 24,785,639,031.55
  5. Step 5: Solve for x
    x = 24,785,639,031.55/212,629.02
  6. Step 6: Final answer
    x = 116,567.53

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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.