Home / 89,165,645.40-133,748,468.10-78,643,113.60

Finding the Fourth Proportional to 89,165,645.40, 133,748,468.10 and 78,643,113.60

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Solution

The fourth proportional to 89,165,645.40, 133,748,468.10 and 78,643,113.60 is: 117,964,670.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,165,645.40 : 133,748,468.10 = 78,643,113.60 : x
  2. Step 2: Convert to fraction form
    89,165,645.40/133,748,468.10 = 78,643,113.60/x
  3. Step 3: Cross multiply
    89,165,645.40x = 133,748,468.10 × 78,643,113.60
  4. Step 4: Simplify right side
    89,165,645.40x = 10,518,395,970,614,274
  5. Step 5: Solve for x
    x = 10,518,395,970,614,274/89,165,645.40
  6. Step 6: Final answer
    x = 117,964,670.40

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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.