Home / 115,657.72-159,613.76-70,328.20

Finding the Fourth Proportional to 115,657.72, 159,613.76 and 70,328.20

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Solution

The fourth proportional to 115,657.72, 159,613.76 and 70,328.20 is: 97,056.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,657.72 : 159,613.76 = 70,328.20 : x
  2. Step 2: Convert to fraction form
    115,657.72/159,613.76 = 70,328.20/x
  3. Step 3: Cross multiply
    115,657.72x = 159,613.76 × 70,328.20
  4. Step 4: Simplify right side
    115,657.72x = 11,225,348,436.03
  5. Step 5: Solve for x
    x = 11,225,348,436.03/115,657.72
  6. Step 6: Final answer
    x = 97,056.63

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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.