Home / 102,867.40-141,970.08-57,547.90

Finding the Fourth Proportional to 102,867.40, 141,970.08 and 57,547.90

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Solution

The fourth proportional to 102,867.40, 141,970.08 and 57,547.90 is: 79,423.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,867.40 : 141,970.08 = 57,547.90 : x
  2. Step 2: Convert to fraction form
    102,867.40/141,970.08 = 57,547.90/x
  3. Step 3: Cross multiply
    102,867.40x = 141,970.08 × 57,547.90
  4. Step 4: Simplify right side
    102,867.40x = 8,170,079,966.83
  5. Step 5: Solve for x
    x = 8,170,079,966.83/102,867.40
  6. Step 6: Final answer
    x = 79,423.41

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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.