Home / 112,365.40-155,086.05-72,130.06

Finding the Fourth Proportional to 112,365.40, 155,086.05 and 72,130.06

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Solution

The fourth proportional to 112,365.40, 155,086.05 and 72,130.06 is: 99,553.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,365.40 : 155,086.05 = 72,130.06 : x
  2. Step 2: Convert to fraction form
    112,365.40/155,086.05 = 72,130.06/x
  3. Step 3: Cross multiply
    112,365.40x = 155,086.05 × 72,130.06
  4. Step 4: Simplify right side
    112,365.40x = 11,186,366,091.66
  5. Step 5: Solve for x
    x = 11,186,366,091.66/112,365.40
  6. Step 6: Final answer
    x = 99,553.48

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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.