Home / 145,282.18-200,478.63-81,630.58

Finding the Fourth Proportional to 145,282.18, 200,478.63 and 81,630.58

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Solution

The fourth proportional to 145,282.18, 200,478.63 and 81,630.58 is: 112,644.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,282.18 : 200,478.63 = 81,630.58 : x
  2. Step 2: Convert to fraction form
    145,282.18/200,478.63 = 81,630.58/x
  3. Step 3: Cross multiply
    145,282.18x = 200,478.63 × 81,630.58
  4. Step 4: Simplify right side
    145,282.18x = 16,365,186,844.51
  5. Step 5: Solve for x
    x = 16,365,186,844.51/145,282.18
  6. Step 6: Final answer
    x = 112,644.14

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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.