Home / 145,430.32-200,711.78-81,766.75

Finding the Fourth Proportional to 145,430.32, 200,711.78 and 81,766.75

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Solution

The fourth proportional to 145,430.32, 200,711.78 and 81,766.75 is: 112,848.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,430.32 : 200,711.78 = 81,766.75 : x
  2. Step 2: Convert to fraction form
    145,430.32/200,711.78 = 81,766.75/x
  3. Step 3: Cross multiply
    145,430.32x = 200,711.78 × 81,766.75
  4. Step 4: Simplify right side
    145,430.32x = 16,411,549,937.32
  5. Step 5: Solve for x
    x = 16,411,549,937.32/145,430.32
  6. Step 6: Final answer
    x = 112,848.20

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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.