Home / 101,280.42-139,775.13-55,962.32

Finding the Fourth Proportional to 101,280.42, 139,775.13 and 55,962.32

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Solution

The fourth proportional to 101,280.42, 139,775.13 and 55,962.32 is: 77,232.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,280.42 : 139,775.13 = 55,962.32 : x
  2. Step 2: Convert to fraction form
    101,280.42/139,775.13 = 55,962.32/x
  3. Step 3: Cross multiply
    101,280.42x = 139,775.13 × 55,962.32
  4. Step 4: Simplify right side
    101,280.42x = 7,822,139,854.23
  5. Step 5: Solve for x
    x = 7,822,139,854.23/101,280.42
  6. Step 6: Final answer
    x = 77,232.50

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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.