Home / 145,323.72-200,565.53-81,661.52

Finding the Fourth Proportional to 145,323.72, 200,565.53 and 81,661.52

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Solution

The fourth proportional to 145,323.72, 200,565.53 and 81,661.52 is: 112,703.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,323.72 : 200,565.53 = 81,661.52 : x
  2. Step 2: Convert to fraction form
    145,323.72/200,565.53 = 81,661.52/x
  3. Step 3: Cross multiply
    145,323.72x = 200,565.53 × 81,661.52
  4. Step 4: Simplify right side
    145,323.72x = 16,378,486,039.41
  5. Step 5: Solve for x
    x = 16,378,486,039.41/145,323.72
  6. Step 6: Final answer
    x = 112,703.46

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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.