Home / 101,721.76-140,370.40-56,397.10

Finding the Fourth Proportional to 101,721.76, 140,370.40 and 56,397.10

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Solution

The fourth proportional to 101,721.76, 140,370.40 and 56,397.10 is: 77,824.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,721.76 : 140,370.40 = 56,397.10 : x
  2. Step 2: Convert to fraction form
    101,721.76/140,370.40 = 56,397.10/x
  3. Step 3: Cross multiply
    101,721.76x = 140,370.40 × 56,397.10
  4. Step 4: Simplify right side
    101,721.76x = 7,916,483,485.84
  5. Step 5: Solve for x
    x = 7,916,483,485.84/101,721.76
  6. Step 6: Final answer
    x = 77,824.88

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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.