Home / 99,165.09-148,776.80-39,970.29

Finding the Fourth Proportional to 99,165.09, 148,776.80 and 39,970.29

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Solution

The fourth proportional to 99,165.09, 148,776.80 and 39,970.29 is: 59,967.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,165.09 : 148,776.80 = 39,970.29 : x
  2. Step 2: Convert to fraction form
    99,165.09/148,776.80 = 39,970.29/x
  3. Step 3: Cross multiply
    99,165.09x = 148,776.80 × 39,970.29
  4. Step 4: Simplify right side
    99,165.09x = 5,946,651,641.42
  5. Step 5: Solve for x
    x = 5,946,651,641.42/99,165.09
  6. Step 6: Final answer
    x = 59,967.19

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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.