Home / 115,389.18-159,266.16-65,117.34

Finding the Fourth Proportional to 115,389.18, 159,266.16 and 65,117.34

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Solution

The fourth proportional to 115,389.18, 159,266.16 and 65,117.34 is: 89,878.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,389.18 : 159,266.16 = 65,117.34 : x
  2. Step 2: Convert to fraction form
    115,389.18/159,266.16 = 65,117.34/x
  3. Step 3: Cross multiply
    115,389.18x = 159,266.16 × 65,117.34
  4. Step 4: Simplify right side
    115,389.18x = 10,370,988,691.21
  5. Step 5: Solve for x
    x = 10,370,988,691.21/115,389.18
  6. Step 6: Final answer
    x = 89,878.35

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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.