Home / 115,421.12-159,280.46-64,430.88

Finding the Fourth Proportional to 115,421.12, 159,280.46 and 64,430.88

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Solution

The fourth proportional to 115,421.12, 159,280.46 and 64,430.88 is: 88,914.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,421.12 : 159,280.46 = 64,430.88 : x
  2. Step 2: Convert to fraction form
    115,421.12/159,280.46 = 64,430.88/x
  3. Step 3: Cross multiply
    115,421.12x = 159,280.46 × 64,430.88
  4. Step 4: Simplify right side
    115,421.12x = 10,262,580,204.60
  5. Step 5: Solve for x
    x = 10,262,580,204.60/115,421.12
  6. Step 6: Final answer
    x = 88,914.23

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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.