Home / 99,980.46-149,088.87-99,080.35

Finding the Fourth Proportional to 99,980.46, 149,088.87 and 99,080.35

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Solution

The fourth proportional to 99,980.46, 149,088.87 and 99,080.35 is: 147,746.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,980.46 : 149,088.87 = 99,080.35 : x
  2. Step 2: Convert to fraction form
    99,980.46/149,088.87 = 99,080.35/x
  3. Step 3: Cross multiply
    99,980.46x = 149,088.87 × 99,080.35
  4. Step 4: Simplify right side
    99,980.46x = 14,771,777,047.98
  5. Step 5: Solve for x
    x = 14,771,777,047.98/99,980.46
  6. Step 6: Final answer
    x = 147,746.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.