Home / 99,345.60-149,018.40-59,979.60

Finding the Fourth Proportional to 99,345.60, 149,018.40 and 59,979.60

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Solution

The fourth proportional to 99,345.60, 149,018.40 and 59,979.60 is: 89,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,345.60 : 149,018.40 = 59,979.60 : x
  2. Step 2: Convert to fraction form
    99,345.60/149,018.40 = 59,979.60/x
  3. Step 3: Cross multiply
    99,345.60x = 149,018.40 × 59,979.60
  4. Step 4: Simplify right side
    99,345.60x = 8,938,064,024.64
  5. Step 5: Solve for x
    x = 8,938,064,024.64/99,345.60
  6. Step 6: Final answer
    x = 89,969.40

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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.