Home / 118,637.08-163,648.02-78,350.92

Finding the Fourth Proportional to 118,637.08, 163,648.02 and 78,350.92

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Solution

The fourth proportional to 118,637.08, 163,648.02 and 78,350.92 is: 108,077.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,637.08 : 163,648.02 = 78,350.92 : x
  2. Step 2: Convert to fraction form
    118,637.08/163,648.02 = 78,350.92/x
  3. Step 3: Cross multiply
    118,637.08x = 163,648.02 × 78,350.92
  4. Step 4: Simplify right side
    118,637.08x = 12,821,972,923.18
  5. Step 5: Solve for x
    x = 12,821,972,923.18/118,637.08
  6. Step 6: Final answer
    x = 108,077.28

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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.