Home / 90,812,878.60-125,393,178.20-73,115,565

Finding the Fourth Proportional to 90,812,878.60, 125,393,178.20 and 73,115,565

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Solution

The fourth proportional to 90,812,878.60, 125,393,178.20 and 73,115,565 is: 100,956,970.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,812,878.60 : 125,393,178.20 = 73,115,565 : x
  2. Step 2: Convert to fraction form
    90,812,878.60/125,393,178.20 = 73,115,565/x
  3. Step 3: Cross multiply
    90,812,878.60x = 125,393,178.20 × 73,115,565
  4. Step 4: Simplify right side
    90,812,878.60x = 9,168,193,071,238,684
  5. Step 5: Solve for x
    x = 9,168,193,071,238,684/90,812,878.60
  6. Step 6: Final answer
    x = 100,956,970.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.