Home / 113,865.12-157,079.44-71,402.40

Finding the Fourth Proportional to 113,865.12, 157,079.44 and 71,402.40

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Solution

The fourth proportional to 113,865.12, 157,079.44 and 71,402.40 is: 98,501.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,865.12 : 157,079.44 = 71,402.40 : x
  2. Step 2: Convert to fraction form
    113,865.12/157,079.44 = 71,402.40/x
  3. Step 3: Cross multiply
    113,865.12x = 157,079.44 × 71,402.40
  4. Step 4: Simplify right side
    113,865.12x = 11,215,849,006.66
  5. Step 5: Solve for x
    x = 11,215,849,006.66/113,865.12
  6. Step 6: Final answer
    x = 98,501.18

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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.