Home / 90,810.15-136,051.20-55,708.80

Finding the Fourth Proportional to 90,810.15, 136,051.20 and 55,708.80

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Solution

The fourth proportional to 90,810.15, 136,051.20 and 55,708.80 is: 83,462.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,810.15 : 136,051.20 = 55,708.80 : x
  2. Step 2: Convert to fraction form
    90,810.15/136,051.20 = 55,708.80/x
  3. Step 3: Cross multiply
    90,810.15x = 136,051.20 × 55,708.80
  4. Step 4: Simplify right side
    90,810.15x = 7,579,249,090.56
  5. Step 5: Solve for x
    x = 7,579,249,090.56/90,810.15
  6. Step 6: Final answer
    x = 83,462.58

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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.