Home / 90,683.20-136,029.36-64,312.64

Finding the Fourth Proportional to 90,683.20, 136,029.36 and 64,312.64

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Solution

The fourth proportional to 90,683.20, 136,029.36 and 64,312.64 is: 96,472.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,683.20 : 136,029.36 = 64,312.64 : x
  2. Step 2: Convert to fraction form
    90,683.20/136,029.36 = 64,312.64/x
  3. Step 3: Cross multiply
    90,683.20x = 136,029.36 × 64,312.64
  4. Step 4: Simplify right side
    90,683.20x = 8,748,407,259.11
  5. Step 5: Solve for x
    x = 8,748,407,259.11/90,683.20
  6. Step 6: Final answer
    x = 96,472.19

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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.