Home / 100,897.20-151,345.80-30,776.40

Finding the Fourth Proportional to 100,897.20, 151,345.80 and 30,776.40

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Solution

The fourth proportional to 100,897.20, 151,345.80 and 30,776.40 is: 46,164.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,897.20 : 151,345.80 = 30,776.40 : x
  2. Step 2: Convert to fraction form
    100,897.20/151,345.80 = 30,776.40/x
  3. Step 3: Cross multiply
    100,897.20x = 151,345.80 × 30,776.40
  4. Step 4: Simplify right side
    100,897.20x = 4,657,878,879.12
  5. Step 5: Solve for x
    x = 4,657,878,879.12/100,897.20
  6. Step 6: Final answer
    x = 46,164.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.