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Finding the Fourth Proportional to 97,798,509.60, 146,697,764.40 and 90,408,199.20

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Solution

The fourth proportional to 97,798,509.60, 146,697,764.40 and 90,408,199.20 is: 135,612,298.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,798,509.60 : 146,697,764.40 = 90,408,199.20 : x
  2. Step 2: Convert to fraction form
    97,798,509.60/146,697,764.40 = 90,408,199.20/x
  3. Step 3: Cross multiply
    97,798,509.60x = 146,697,764.40 × 90,408,199.20
  4. Step 4: Simplify right side
    97,798,509.60x = 13,262,680,706,069,870
  5. Step 5: Solve for x
    x = 13,262,680,706,069,870/97,798,509.60
  6. Step 6: Final answer
    x = 135,612,298.80

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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.