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Finding the Fourth Proportional to 153,898.90, 230,848.35 and 87,543.70

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Solution

The fourth proportional to 153,898.90, 230,848.35 and 87,543.70 is: 131,315.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,898.90 : 230,848.35 = 87,543.70 : x
  2. Step 2: Convert to fraction form
    153,898.90/230,848.35 = 87,543.70/x
  3. Step 3: Cross multiply
    153,898.90x = 230,848.35 × 87,543.70
  4. Step 4: Simplify right side
    153,898.90x = 20,209,318,697.90
  5. Step 5: Solve for x
    x = 20,209,318,697.90/153,898.90
  6. Step 6: Final answer
    x = 131,315.55

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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.