Home / 105,158.22-144,864.36-90,002.40

Finding the Fourth Proportional to 105,158.22, 144,864.36 and 90,002.40

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Solution

The fourth proportional to 105,158.22, 144,864.36 and 90,002.40 is: 123,985.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,158.22 : 144,864.36 = 90,002.40 : x
  2. Step 2: Convert to fraction form
    105,158.22/144,864.36 = 90,002.40/x
  3. Step 3: Cross multiply
    105,158.22x = 144,864.36 × 90,002.40
  4. Step 4: Simplify right side
    105,158.22x = 13,038,140,074.46
  5. Step 5: Solve for x
    x = 13,038,140,074.46/105,158.22
  6. Step 6: Final answer
    x = 123,985.93

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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.