Home / 101,760.13-140,426.89-56,430.80

Finding the Fourth Proportional to 101,760.13, 140,426.89 and 56,430.80

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Solution

The fourth proportional to 101,760.13, 140,426.89 and 56,430.80 is: 77,873.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,760.13 : 140,426.89 = 56,430.80 : x
  2. Step 2: Convert to fraction form
    101,760.13/140,426.89 = 56,430.80/x
  3. Step 3: Cross multiply
    101,760.13x = 140,426.89 × 56,430.80
  4. Step 4: Simplify right side
    101,760.13x = 7,924,401,744.21
  5. Step 5: Solve for x
    x = 7,924,401,744.21/101,760.13
  6. Step 6: Final answer
    x = 77,873.35

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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.