Home / 112,648.32-155,365.09-72,366.21

Finding the Fourth Proportional to 112,648.32, 155,365.09 and 72,366.21

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Solution

The fourth proportional to 112,648.32, 155,365.09 and 72,366.21 is: 99,807.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,648.32 : 155,365.09 = 72,366.21 : x
  2. Step 2: Convert to fraction form
    112,648.32/155,365.09 = 72,366.21/x
  3. Step 3: Cross multiply
    112,648.32x = 155,365.09 × 72,366.21
  4. Step 4: Simplify right side
    112,648.32x = 11,243,182,548.69
  5. Step 5: Solve for x
    x = 11,243,182,548.69/112,648.32
  6. Step 6: Final answer
    x = 99,807.81

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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.