Home / 115,430.13-159,292.49-64,439.60

Finding the Fourth Proportional to 115,430.13, 159,292.49 and 64,439.60

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Solution

The fourth proportional to 115,430.13, 159,292.49 and 64,439.60 is: 88,926.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,430.13 : 159,292.49 = 64,439.60 : x
  2. Step 2: Convert to fraction form
    115,430.13/159,292.49 = 64,439.60/x
  3. Step 3: Cross multiply
    115,430.13x = 159,292.49 × 64,439.60
  4. Step 4: Simplify right side
    115,430.13x = 10,264,743,219.94
  5. Step 5: Solve for x
    x = 10,264,743,219.94/115,430.13
  6. Step 6: Final answer
    x = 88,926.03

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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.