Home / 105,758.40-158,637.60-80,875.20

Finding the Fourth Proportional to 105,758.40, 158,637.60 and 80,875.20

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Solution

The fourth proportional to 105,758.40, 158,637.60 and 80,875.20 is: 121,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,758.40 : 158,637.60 = 80,875.20 : x
  2. Step 2: Convert to fraction form
    105,758.40/158,637.60 = 80,875.20/x
  3. Step 3: Cross multiply
    105,758.40x = 158,637.60 × 80,875.20
  4. Step 4: Simplify right side
    105,758.40x = 12,829,847,627.52
  5. Step 5: Solve for x
    x = 12,829,847,627.52/105,758.40
  6. Step 6: Final answer
    x = 121,312.80

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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.