Home / 210,327.90-315,491.85-70,086.53

Finding the Fourth Proportional to 210,327.90, 315,491.85 and 70,086.53

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Solution

The fourth proportional to 210,327.90, 315,491.85 and 70,086.53 is: 105,129.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,327.90 : 315,491.85 = 70,086.53 : x
  2. Step 2: Convert to fraction form
    210,327.90/315,491.85 = 70,086.53/x
  3. Step 3: Cross multiply
    210,327.90x = 315,491.85 × 70,086.53
  4. Step 4: Simplify right side
    210,327.90x = 22,111,727,432.32
  5. Step 5: Solve for x
    x = 22,111,727,432.32/210,327.90
  6. Step 6: Final answer
    x = 105,129.79

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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.