Home / 145,173.02-200,356.47-91,457.12

Finding the Fourth Proportional to 145,173.02, 200,356.47 and 91,457.12

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Solution

The fourth proportional to 145,173.02, 200,356.47 and 91,457.12 is: 126,221.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,173.02 : 200,356.47 = 91,457.12 : x
  2. Step 2: Convert to fraction form
    145,173.02/200,356.47 = 91,457.12/x
  3. Step 3: Cross multiply
    145,173.02x = 200,356.47 × 91,457.12
  4. Step 4: Simplify right side
    145,173.02x = 18,324,024,717.78
  5. Step 5: Solve for x
    x = 18,324,024,717.78/145,173.02
  6. Step 6: Final answer
    x = 126,221.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.