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Finding the Fourth Proportional to 147,018,162.40, 220,191,320.40 and 86,551,986.40

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Solution

The fourth proportional to 147,018,162.40, 220,191,320.40 and 86,551,986.40 is: 129,630,216.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,018,162.40 : 220,191,320.40 = 86,551,986.40 : x
  2. Step 2: Convert to fraction form
    147,018,162.40/220,191,320.40 = 86,551,986.40/x
  3. Step 3: Cross multiply
    147,018,162.40x = 220,191,320.40 × 86,551,986.40
  4. Step 4: Simplify right side
    147,018,162.40x = 19,057,996,168,658,844
  5. Step 5: Solve for x
    x = 19,057,996,168,658,844/147,018,162.40
  6. Step 6: Final answer
    x = 129,630,216.14

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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.