Home / 97,712.12-134,969.28-72,270.20

Finding the Fourth Proportional to 97,712.12, 134,969.28 and 72,270.20

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Solution

The fourth proportional to 97,712.12, 134,969.28 and 72,270.20 is: 99,826.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,712.12 : 134,969.28 = 72,270.20 : x
  2. Step 2: Convert to fraction form
    97,712.12/134,969.28 = 72,270.20/x
  3. Step 3: Cross multiply
    97,712.12x = 134,969.28 × 72,270.20
  4. Step 4: Simplify right side
    97,712.12x = 9,754,256,859.46
  5. Step 5: Solve for x
    x = 9,754,256,859.46/97,712.12
  6. Step 6: Final answer
    x = 99,826.48

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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.