Home / 102,955.19-141,649.36-90,802.76

Finding the Fourth Proportional to 102,955.19, 141,649.36 and 90,802.76

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Solution

The fourth proportional to 102,955.19, 141,649.36 and 90,802.76 is: 124,929.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,955.19 : 141,649.36 = 90,802.76 : x
  2. Step 2: Convert to fraction form
    102,955.19/141,649.36 = 90,802.76/x
  3. Step 3: Cross multiply
    102,955.19x = 141,649.36 × 90,802.76
  4. Step 4: Simplify right side
    102,955.19x = 12,862,151,904.98
  5. Step 5: Solve for x
    x = 12,862,151,904.98/102,955.19
  6. Step 6: Final answer
    x = 124,929.62

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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.