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Finding the Fourth Proportional to 162,896,643.60, 244,344,965.40 and 86,369,139.60

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Solution

The fourth proportional to 162,896,643.60, 244,344,965.40 and 86,369,139.60 is: 129,553,709.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,896,643.60 : 244,344,965.40 = 86,369,139.60 : x
  2. Step 2: Convert to fraction form
    162,896,643.60/244,344,965.40 = 86,369,139.60/x
  3. Step 3: Cross multiply
    162,896,643.60x = 244,344,965.40 × 86,369,139.60
  4. Step 4: Simplify right side
    162,896,643.60x = 21,103,864,427,189,768
  5. Step 5: Solve for x
    x = 21,103,864,427,189,768/162,896,643.60
  6. Step 6: Final answer
    x = 129,553,709.40

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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.