Home / 138,802.54-191,547.47-75,140.29

Finding the Fourth Proportional to 138,802.54, 191,547.47 and 75,140.29

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Solution

The fourth proportional to 138,802.54, 191,547.47 and 75,140.29 is: 103,693.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,802.54 : 191,547.47 = 75,140.29 : x
  2. Step 2: Convert to fraction form
    138,802.54/191,547.47 = 75,140.29/x
  3. Step 3: Cross multiply
    138,802.54x = 191,547.47 × 75,140.29
  4. Step 4: Simplify right side
    138,802.54x = 14,392,932,068.86
  5. Step 5: Solve for x
    x = 14,392,932,068.86/138,802.54
  6. Step 6: Final answer
    x = 103,693.58

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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.