Home / 98,931.16-136,528.50-70,704.28

Finding the Fourth Proportional to 98,931.16, 136,528.50 and 70,704.28

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Solution

The fourth proportional to 98,931.16, 136,528.50 and 70,704.28 is: 97,574.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,931.16 : 136,528.50 = 70,704.28 : x
  2. Step 2: Convert to fraction form
    98,931.16/136,528.50 = 70,704.28/x
  3. Step 3: Cross multiply
    98,931.16x = 136,528.50 × 70,704.28
  4. Step 4: Simplify right side
    98,931.16x = 9,653,149,291.98
  5. Step 5: Solve for x
    x = 9,653,149,291.98/98,931.16
  6. Step 6: Final answer
    x = 97,574.41

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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.