Home / 85,199.29-127,612.80-70,240.21

Finding the Fourth Proportional to 85,199.29, 127,612.80 and 70,240.21

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Solution

The fourth proportional to 85,199.29, 127,612.80 and 70,240.21 is: 105,206.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,199.29 : 127,612.80 = 70,240.21 : x
  2. Step 2: Convert to fraction form
    85,199.29/127,612.80 = 70,240.21/x
  3. Step 3: Cross multiply
    85,199.29x = 127,612.80 × 70,240.21
  4. Step 4: Simplify right side
    85,199.29x = 8,963,549,870.69
  5. Step 5: Solve for x
    x = 8,963,549,870.69/85,199.29
  6. Step 6: Final answer
    x = 105,206.86

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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.