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Finding the Fourth Proportional to 185,430.80, 255,893.08 and 100,547.60

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Solution

The fourth proportional to 185,430.80, 255,893.08 and 100,547.60 is: 138,754.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,430.80 : 255,893.08 = 100,547.60 : x
  2. Step 2: Convert to fraction form
    185,430.80/255,893.08 = 100,547.60/x
  3. Step 3: Cross multiply
    185,430.80x = 255,893.08 × 100,547.60
  4. Step 4: Simplify right side
    185,430.80x = 25,729,435,050.61
  5. Step 5: Solve for x
    x = 25,729,435,050.61/185,430.80
  6. Step 6: Final answer
    x = 138,754.92

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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.