Home / 155,931.21-215,184.03-87,948.75

Finding the Fourth Proportional to 155,931.21, 215,184.03 and 87,948.75

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Solution

The fourth proportional to 155,931.21, 215,184.03 and 87,948.75 is: 121,368.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,931.21 : 215,184.03 = 87,948.75 : x
  2. Step 2: Convert to fraction form
    155,931.21/215,184.03 = 87,948.75/x
  3. Step 3: Cross multiply
    155,931.21x = 215,184.03 × 87,948.75
  4. Step 4: Simplify right side
    155,931.21x = 18,925,165,119.98
  5. Step 5: Solve for x
    x = 18,925,165,119.98/155,931.21
  6. Step 6: Final answer
    x = 121,368.68

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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.