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Finding the Fourth Proportional to 98,275,998.40, 147,413,997.60 and 86,938,590.40

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Solution

The fourth proportional to 98,275,998.40, 147,413,997.60 and 86,938,590.40 is: 130,407,885.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,275,998.40 : 147,413,997.60 = 86,938,590.40 : x
  2. Step 2: Convert to fraction form
    98,275,998.40/147,413,997.60 = 86,938,590.40/x
  3. Step 3: Cross multiply
    98,275,998.40x = 147,413,997.60 × 86,938,590.40
  4. Step 4: Simplify right side
    98,275,998.40x = 12,815,965,156,572,984
  5. Step 5: Solve for x
    x = 12,815,965,156,572,984/98,275,998.40
  6. Step 6: Final answer
    x = 130,407,885.60

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1.5x scale

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.