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Finding the Fourth Proportional to 99,201.60, 148,802.40 and 89,870.40

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Solution

The fourth proportional to 99,201.60, 148,802.40 and 89,870.40 is: 134,805.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,201.60 : 148,802.40 = 89,870.40 : x
  2. Step 2: Convert to fraction form
    99,201.60/148,802.40 = 89,870.40/x
  3. Step 3: Cross multiply
    99,201.60x = 148,802.40 × 89,870.40
  4. Step 4: Simplify right side
    99,201.60x = 13,372,931,208.96
  5. Step 5: Solve for x
    x = 13,372,931,208.96/99,201.60
  6. Step 6: Final answer
    x = 134,805.60

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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.