Home / 106,720.48-147,098.64-75,686.08

Finding the Fourth Proportional to 106,720.48, 147,098.64 and 75,686.08

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Solution

The fourth proportional to 106,720.48, 147,098.64 and 75,686.08 is: 104,322.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,720.48 : 147,098.64 = 75,686.08 : x
  2. Step 2: Convert to fraction form
    106,720.48/147,098.64 = 75,686.08/x
  3. Step 3: Cross multiply
    106,720.48x = 147,098.64 × 75,686.08
  4. Step 4: Simplify right side
    106,720.48x = 11,133,319,434.93
  5. Step 5: Solve for x
    x = 11,133,319,434.93/106,720.48
  6. Step 6: Final answer
    x = 104,322.24

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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.