Home / 105,422.04-145,395.81-75,197.70

Finding the Fourth Proportional to 105,422.04, 145,395.81 and 75,197.70

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Solution

The fourth proportional to 105,422.04, 145,395.81 and 75,197.70 is: 103,711.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,422.04 : 145,395.81 = 75,197.70 : x
  2. Step 2: Convert to fraction form
    105,422.04/145,395.81 = 75,197.70/x
  3. Step 3: Cross multiply
    105,422.04x = 145,395.81 × 75,197.70
  4. Step 4: Simplify right side
    105,422.04x = 10,933,430,501.64
  5. Step 5: Solve for x
    x = 10,933,430,501.64/105,422.04
  6. Step 6: Final answer
    x = 103,711.05

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Half scale
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Double scale
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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.