Home / 105,124.86-145,091.12-62,686.13

Finding the Fourth Proportional to 105,124.86, 145,091.12 and 62,686.13

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Solution

The fourth proportional to 105,124.86, 145,091.12 and 62,686.13 is: 86,518.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,124.86 : 145,091.12 = 62,686.13 : x
  2. Step 2: Convert to fraction form
    105,124.86/145,091.12 = 62,686.13/x
  3. Step 3: Cross multiply
    105,124.86x = 145,091.12 × 62,686.13
  4. Step 4: Simplify right side
    105,124.86x = 9,095,199,771.28
  5. Step 5: Solve for x
    x = 9,095,199,771.28/105,124.86
  6. Step 6: Final answer
    x = 86,518.07

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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.