Home / 105,302.25-157,953.38-31,430.25

Finding the Fourth Proportional to 105,302.25, 157,953.38 and 31,430.25

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Solution

The fourth proportional to 105,302.25, 157,953.38 and 31,430.25 is: 47,145.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,302.25 : 157,953.38 = 31,430.25 : x
  2. Step 2: Convert to fraction form
    105,302.25/157,953.38 = 31,430.25/x
  3. Step 3: Cross multiply
    105,302.25x = 157,953.38 × 31,430.25
  4. Step 4: Simplify right side
    105,302.25x = 4,964,514,064.59
  5. Step 5: Solve for x
    x = 4,964,514,064.59/105,302.25
  6. Step 6: Final answer
    x = 47,145.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.