Home / 105,675.28-145,697.64-75,496.72

Finding the Fourth Proportional to 105,675.28, 145,697.64 and 75,496.72

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Solution

The fourth proportional to 105,675.28, 145,697.64 and 75,496.72 is: 104,089.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,675.28 : 145,697.64 = 75,496.72 : x
  2. Step 2: Convert to fraction form
    105,675.28/145,697.64 = 75,496.72/x
  3. Step 3: Cross multiply
    105,675.28x = 145,697.64 × 75,496.72
  4. Step 4: Simplify right side
    105,675.28x = 10,999,693,931.74
  5. Step 5: Solve for x
    x = 10,999,693,931.74/105,675.28
  6. Step 6: Final answer
    x = 104,089.57

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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.