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Finding the Fourth Proportional to 118,693.64, 178,040.45 and 39,807.64

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Solution

The fourth proportional to 118,693.64, 178,040.45 and 39,807.64 is: 59,711.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,693.64 : 178,040.45 = 39,807.64 : x
  2. Step 2: Convert to fraction form
    118,693.64/178,040.45 = 39,807.64/x
  3. Step 3: Cross multiply
    118,693.64x = 178,040.45 × 39,807.64
  4. Step 4: Simplify right side
    118,693.64x = 7,087,369,248.84
  5. Step 5: Solve for x
    x = 7,087,369,248.84/118,693.64
  6. Step 6: Final answer
    x = 59,711.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.