Home / 101,742.81-140,402.46-56,420.07

Finding the Fourth Proportional to 101,742.81, 140,402.46 and 56,420.07

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Solution

The fourth proportional to 101,742.81, 140,402.46 and 56,420.07 is: 77,858.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,742.81 : 140,402.46 = 56,420.07 : x
  2. Step 2: Convert to fraction form
    101,742.81/140,402.46 = 56,420.07/x
  3. Step 3: Cross multiply
    101,742.81x = 140,402.46 × 56,420.07
  4. Step 4: Simplify right side
    101,742.81x = 7,921,516,621.37
  5. Step 5: Solve for x
    x = 7,921,516,621.37/101,742.81
  6. Step 6: Final answer
    x = 77,858.24

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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.