Home / 105,613.12-158,407.35-42,430.69

Finding the Fourth Proportional to 105,613.12, 158,407.35 and 42,430.69

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Solution

The fourth proportional to 105,613.12, 158,407.35 and 42,430.69 is: 63,641.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,613.12 : 158,407.35 = 42,430.69 : x
  2. Step 2: Convert to fraction form
    105,613.12/158,407.35 = 42,430.69/x
  3. Step 3: Cross multiply
    105,613.12x = 158,407.35 × 42,430.69
  4. Step 4: Simplify right side
    105,613.12x = 6,721,332,309.42
  5. Step 5: Solve for x
    x = 6,721,332,309.42/105,613.12
  6. Step 6: Final answer
    x = 63,641.08

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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.