Home / 105,291.68-157,938.20-42,117.08

Finding the Fourth Proportional to 105,291.68, 157,938.20 and 42,117.08

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Solution

The fourth proportional to 105,291.68, 157,938.20 and 42,117.08 is: 63,175.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,291.68 : 157,938.20 = 42,117.08 : x
  2. Step 2: Convert to fraction form
    105,291.68/157,938.20 = 42,117.08/x
  3. Step 3: Cross multiply
    105,291.68x = 157,938.20 × 42,117.08
  4. Step 4: Simplify right side
    105,291.68x = 6,651,895,804.46
  5. Step 5: Solve for x
    x = 6,651,895,804.46/105,291.68
  6. Step 6: Final answer
    x = 63,175.89

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.