Home / 115,153.92-158,909.94-64,166.40

Finding the Fourth Proportional to 115,153.92, 158,909.94 and 64,166.40

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Solution

The fourth proportional to 115,153.92, 158,909.94 and 64,166.40 is: 88,548.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,153.92 : 158,909.94 = 64,166.40 : x
  2. Step 2: Convert to fraction form
    115,153.92/158,909.94 = 64,166.40/x
  3. Step 3: Cross multiply
    115,153.92x = 158,909.94 × 64,166.40
  4. Step 4: Simplify right side
    115,153.92x = 10,196,678,774.02
  5. Step 5: Solve for x
    x = 10,196,678,774.02/115,153.92
  6. Step 6: Final answer
    x = 88,548.26

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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.