Home / 90,518,120.30-135,864,868.22-85,602,291.06

Finding the Fourth Proportional to 90,518,120.30, 135,864,868.22 and 85,602,291.06

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Solution

The fourth proportional to 90,518,120.30, 135,864,868.22 and 85,602,291.06 is: 128,486,362.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,518,120.30 : 135,864,868.22 = 85,602,291.06 : x
  2. Step 2: Convert to fraction form
    90,518,120.30/135,864,868.22 = 85,602,291.06/x
  3. Step 3: Cross multiply
    90,518,120.30x = 135,864,868.22 × 85,602,291.06
  4. Step 4: Simplify right side
    90,518,120.30x = 11,630,343,994,196,984
  5. Step 5: Solve for x
    x = 11,630,343,994,196,984/90,518,120.30
  6. Step 6: Final answer
    x = 128,486,362.24

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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.