Home / 210,171.48-315,400.02-85,535.16

Finding the Fourth Proportional to 210,171.48, 315,400.02 and 85,535.16

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Solution

The fourth proportional to 210,171.48, 315,400.02 and 85,535.16 is: 128,360.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,171.48 : 315,400.02 = 85,535.16 : x
  2. Step 2: Convert to fraction form
    210,171.48/315,400.02 = 85,535.16/x
  3. Step 3: Cross multiply
    210,171.48x = 315,400.02 × 85,535.16
  4. Step 4: Simplify right side
    210,171.48x = 26,977,791,174.70
  5. Step 5: Solve for x
    x = 26,977,791,174.70/210,171.48
  6. Step 6: Final answer
    x = 128,360.86

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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.