Home / 121,245,349.20-181,868,023.80-72,872,408.40

Finding the Fourth Proportional to 121,245,349.20, 181,868,023.80 and 72,872,408.40

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Solution

The fourth proportional to 121,245,349.20, 181,868,023.80 and 72,872,408.40 is: 109,308,612.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,245,349.20 : 181,868,023.80 = 72,872,408.40 : x
  2. Step 2: Convert to fraction form
    121,245,349.20/181,868,023.80 = 72,872,408.40/x
  3. Step 3: Cross multiply
    121,245,349.20x = 181,868,023.80 × 72,872,408.40
  4. Step 4: Simplify right side
    121,245,349.20x = 13,253,160,905,254,522
  5. Step 5: Solve for x
    x = 13,253,160,905,254,522/121,245,349.20
  6. Step 6: Final answer
    x = 109,308,612.60

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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.