Home / 145,403.88-200,657.38-81,741.80

Finding the Fourth Proportional to 145,403.88, 200,657.38 and 81,741.80

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Solution

The fourth proportional to 145,403.88, 200,657.38 and 81,741.80 is: 112,803.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,403.88 : 200,657.38 = 81,741.80 : x
  2. Step 2: Convert to fraction form
    145,403.88/200,657.38 = 81,741.80/x
  3. Step 3: Cross multiply
    145,403.88x = 200,657.38 × 81,741.80
  4. Step 4: Simplify right side
    145,403.88x = 16,402,095,424.48
  5. Step 5: Solve for x
    x = 16,402,095,424.48/145,403.88
  6. Step 6: Final answer
    x = 112,803.70

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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.