Home / 112,541.32-155,327.80-72,305.40

Finding the Fourth Proportional to 112,541.32, 155,327.80 and 72,305.40

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Solution

The fourth proportional to 112,541.32, 155,327.80 and 72,305.40 is: 99,794.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,541.32 : 155,327.80 = 72,305.40 : x
  2. Step 2: Convert to fraction form
    112,541.32/155,327.80 = 72,305.40/x
  3. Step 3: Cross multiply
    112,541.32x = 155,327.80 × 72,305.40
  4. Step 4: Simplify right side
    112,541.32x = 11,231,038,710.12
  5. Step 5: Solve for x
    x = 11,231,038,710.12/112,541.32
  6. Step 6: Final answer
    x = 99,794.80

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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.