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Finding the Fourth Proportional to 153,807.40, 230,538.30 and 78,898.60

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Solution

The fourth proportional to 153,807.40, 230,538.30 and 78,898.60 is: 118,259.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,807.40 : 230,538.30 = 78,898.60 : x
  2. Step 2: Convert to fraction form
    153,807.40/230,538.30 = 78,898.60/x
  3. Step 3: Cross multiply
    153,807.40x = 230,538.30 × 78,898.60
  4. Step 4: Simplify right side
    153,807.40x = 18,189,149,116.38
  5. Step 5: Solve for x
    x = 18,189,149,116.38/153,807.40
  6. Step 6: Final answer
    x = 118,259.26

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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.