Home / 105,117.08-145,039.37-66,862.70

Finding the Fourth Proportional to 105,117.08, 145,039.37 and 66,862.70

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Solution

The fourth proportional to 105,117.08, 145,039.37 and 66,862.70 is: 92,256.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,117.08 : 145,039.37 = 66,862.70 : x
  2. Step 2: Convert to fraction form
    105,117.08/145,039.37 = 66,862.70/x
  3. Step 3: Cross multiply
    105,117.08x = 145,039.37 × 66,862.70
  4. Step 4: Simplify right side
    105,117.08x = 9,697,722,824.99
  5. Step 5: Solve for x
    x = 9,697,722,824.99/105,117.08
  6. Step 6: Final answer
    x = 92,256.40

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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.