Home / 98,934.16-136,532.64-70,707.28

Finding the Fourth Proportional to 98,934.16, 136,532.64 and 70,707.28

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Solution

The fourth proportional to 98,934.16, 136,532.64 and 70,707.28 is: 97,578.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,934.16 : 136,532.64 = 70,707.28 : x
  2. Step 2: Convert to fraction form
    98,934.16/136,532.64 = 70,707.28/x
  3. Step 3: Cross multiply
    98,934.16x = 136,532.64 × 70,707.28
  4. Step 4: Simplify right side
    98,934.16x = 9,653,851,605.62
  5. Step 5: Solve for x
    x = 9,653,851,605.62/98,934.16
  6. Step 6: Final answer
    x = 97,578.55

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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.