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Finding the Fourth Proportional to 123,491.68, 185,085.68 and 70,228.32

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Solution

The fourth proportional to 123,491.68, 185,085.68 and 70,228.32 is: 105,256.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,491.68 : 185,085.68 = 70,228.32 : x
  2. Step 2: Convert to fraction form
    123,491.68/185,085.68 = 70,228.32/x
  3. Step 3: Cross multiply
    123,491.68x = 185,085.68 × 70,228.32
  4. Step 4: Simplify right side
    123,491.68x = 12,998,256,362.46
  5. Step 5: Solve for x
    x = 12,998,256,362.46/123,491.68
  6. Step 6: Final answer
    x = 105,256.13

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1.5x scale

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.