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Finding the Fourth Proportional to 115,798.62, 159,779.39 and 64,813.58

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Solution

The fourth proportional to 115,798.62, 159,779.39 and 64,813.58 is: 89,430.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,798.62 : 159,779.39 = 64,813.58 : x
  2. Step 2: Convert to fraction form
    115,798.62/159,779.39 = 64,813.58/x
  3. Step 3: Cross multiply
    115,798.62x = 159,779.39 × 64,813.58
  4. Step 4: Simplify right side
    115,798.62x = 10,355,873,153.15
  5. Step 5: Solve for x
    x = 10,355,873,153.15/115,798.62
  6. Step 6: Final answer
    x = 89,430.02

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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.