Home / 149,048.02-205,686.12-85,386.07

Finding the Fourth Proportional to 149,048.02, 205,686.12 and 85,386.07

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Solution

The fourth proportional to 149,048.02, 205,686.12 and 85,386.07 is: 117,832.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,048.02 : 205,686.12 = 85,386.07 : x
  2. Step 2: Convert to fraction form
    149,048.02/205,686.12 = 85,386.07/x
  3. Step 3: Cross multiply
    149,048.02x = 205,686.12 × 85,386.07
  4. Step 4: Simplify right side
    149,048.02x = 17,562,729,440.35
  5. Step 5: Solve for x
    x = 17,562,729,440.35/149,048.02
  6. Step 6: Final answer
    x = 117,832.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.