Home / 91,172.08-125,870.10-69,491.56

Finding the Fourth Proportional to 91,172.08, 125,870.10 and 69,491.56

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Solution

The fourth proportional to 91,172.08, 125,870.10 and 69,491.56 is: 95,938.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,172.08 : 125,870.10 = 69,491.56 : x
  2. Step 2: Convert to fraction form
    91,172.08/125,870.10 = 69,491.56/x
  3. Step 3: Cross multiply
    91,172.08x = 125,870.10 × 69,491.56
  4. Step 4: Simplify right side
    91,172.08x = 8,746,909,606.36
  5. Step 5: Solve for x
    x = 8,746,909,606.36/91,172.08
  6. Step 6: Final answer
    x = 95,938.47

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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.