Home / 115,421.43-159,261.84-64,431.53

Finding the Fourth Proportional to 115,421.43, 159,261.84 and 64,431.53

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Solution

The fourth proportional to 115,421.43, 159,261.84 and 64,431.53 is: 88,904.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,421.43 : 159,261.84 = 64,431.53 : x
  2. Step 2: Convert to fraction form
    115,421.43/159,261.84 = 64,431.53/x
  3. Step 3: Cross multiply
    115,421.43x = 159,261.84 × 64,431.53
  4. Step 4: Simplify right side
    115,421.43x = 10,261,483,225.51
  5. Step 5: Solve for x
    x = 10,261,483,225.51/115,421.43
  6. Step 6: Final answer
    x = 88,904.49

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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.