Home / 155,952.07-215,209-87,968.05

Finding the Fourth Proportional to 155,952.07, 215,209 and 87,968.05

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Solution

The fourth proportional to 155,952.07, 215,209 and 87,968.05 is: 121,393.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,952.07 : 215,209 = 87,968.05 : x
  2. Step 2: Convert to fraction form
    155,952.07/215,209 = 87,968.05/x
  3. Step 3: Cross multiply
    155,952.07x = 215,209 × 87,968.05
  4. Step 4: Simplify right side
    155,952.07x = 18,931,516,072.45
  5. Step 5: Solve for x
    x = 18,931,516,072.45/155,952.07
  6. Step 6: Final answer
    x = 121,393.17

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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.