Home / 138,802.29-191,547.12-75,140.04

Finding the Fourth Proportional to 138,802.29, 191,547.12 and 75,140.04

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Solution

The fourth proportional to 138,802.29, 191,547.12 and 75,140.04 is: 103,693.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,802.29 : 191,547.12 = 75,140.04 : x
  2. Step 2: Convert to fraction form
    138,802.29/191,547.12 = 75,140.04/x
  3. Step 3: Cross multiply
    138,802.29x = 191,547.12 × 75,140.04
  4. Step 4: Simplify right side
    138,802.29x = 14,392,858,258.68
  5. Step 5: Solve for x
    x = 14,392,858,258.68/138,802.29
  6. Step 6: Final answer
    x = 103,693.23

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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.