Home / 145,079.64-200,211.08-81,432.45

Finding the Fourth Proportional to 145,079.64, 200,211.08 and 81,432.45

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Solution

The fourth proportional to 145,079.64, 200,211.08 and 81,432.45 is: 112,377.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,079.64 : 200,211.08 = 81,432.45 : x
  2. Step 2: Convert to fraction form
    145,079.64/200,211.08 = 81,432.45/x
  3. Step 3: Cross multiply
    145,079.64x = 200,211.08 × 81,432.45
  4. Step 4: Simplify right side
    145,079.64x = 16,303,678,354.38
  5. Step 5: Solve for x
    x = 16,303,678,354.38/145,079.64
  6. Step 6: Final answer
    x = 112,377.44

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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.