Home / 90,426.24-124,802.88-86,439.36

Finding the Fourth Proportional to 90,426.24, 124,802.88 and 86,439.36

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Solution

The fourth proportional to 90,426.24, 124,802.88 and 86,439.36 is: 119,300.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,426.24 : 124,802.88 = 86,439.36 : x
  2. Step 2: Convert to fraction form
    90,426.24/124,802.88 = 86,439.36/x
  3. Step 3: Cross multiply
    90,426.24x = 124,802.88 × 86,439.36
  4. Step 4: Simplify right side
    90,426.24x = 10,787,881,073.36
  5. Step 5: Solve for x
    x = 10,787,881,073.36/90,426.24
  6. Step 6: Final answer
    x = 119,300.34

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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.