Home / 90,518,129.73-135,864,882.36-85,602,300.48

Finding the Fourth Proportional to 90,518,129.73, 135,864,882.36 and 85,602,300.48

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Solution

The fourth proportional to 90,518,129.73, 135,864,882.36 and 85,602,300.48 is: 128,486,376.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,518,129.73 : 135,864,882.36 = 85,602,300.48 : x
  2. Step 2: Convert to fraction form
    90,518,129.73/135,864,882.36 = 85,602,300.48/x
  3. Step 3: Cross multiply
    90,518,129.73x = 135,864,882.36 × 85,602,300.48
  4. Step 4: Simplify right side
    90,518,129.73x = 11,630,346,484,460,574
  5. Step 5: Solve for x
    x = 11,630,346,484,460,574/90,518,129.73
  6. Step 6: Final answer
    x = 128,486,376.37

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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.