Home / 100,947.32-139,307.31-58,530.46

Finding the Fourth Proportional to 100,947.32, 139,307.31 and 58,530.46

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Solution

The fourth proportional to 100,947.32, 139,307.31 and 58,530.46 is: 80,772.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,947.32 : 139,307.31 = 58,530.46 : x
  2. Step 2: Convert to fraction form
    100,947.32/139,307.31 = 58,530.46/x
  3. Step 3: Cross multiply
    100,947.32x = 139,307.31 × 58,530.46
  4. Step 4: Simplify right side
    100,947.32x = 8,153,719,946.47
  5. Step 5: Solve for x
    x = 8,153,719,946.47/100,947.32
  6. Step 6: Final answer
    x = 80,772.03

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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.