Home / 112,851.28-155,660.70-72,501.40

Finding the Fourth Proportional to 112,851.28, 155,660.70 and 72,501.40

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Solution

The fourth proportional to 112,851.28, 155,660.70 and 72,501.40 is: 100,004.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,851.28 : 155,660.70 = 72,501.40 : x
  2. Step 2: Convert to fraction form
    112,851.28/155,660.70 = 72,501.40/x
  3. Step 3: Cross multiply
    112,851.28x = 155,660.70 × 72,501.40
  4. Step 4: Simplify right side
    112,851.28x = 11,285,618,674.98
  5. Step 5: Solve for x
    x = 11,285,618,674.98/112,851.28
  6. Step 6: Final answer
    x = 100,004.35

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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.